North Carolina Math 1 EOC - Practice Calculator Active

Chapter: 3
Standard: A.SSE.1a
DOK: 2
1 pt

2.

Determine the difference between terms and factors.

A

Terms are separated by multiplication and division signs; factors are separated by addition and subtraction signs.

B

Terms tell how many times to add a number to itself; factors tell how many times to multiply a number by itself.

C

Terms are separated by addition and subtraction signs; factors are separated by multiplication and division operators.

D

Terms are separated by addition and multiplication signs; factors are separated by subtraction and division signs.

Chapter: 4
Standard: A.CED.4
DOK: 2
1 pt

5.

The monthly cost of Marilyn’s cell phone is represented by the formula $$P(x)=0.1x+89.50$$. This equation expresses the total cell phone charges, with *x* representing the total number of text messages. Marilyn knows the monthly cost of her cell phone and wants to find the number of text messages. Which equation should Marilyn use to find the number of text messages?

A

$$x=10P(x)\u20138.95$$

B

$$x=\text{}\u20130.1P(x)+8.95$$

C

$$x=0.1P(x)\u20138.95$$

D

$$x=10P(x)\u2013895$$

Chapter: 14
Standard: F.LE.2
DOK: 3
1 pt

15.

Silly city has a population of 95,000 in 2003. The population increases by 2.3 percent annually of the previous years population. Write a function that models the population of Silly city. Then use this function to predict the population of Silly city in 2020.

A

The initial population was 95,000. It is given that the population grows each year by 2.3%, so we need to multiply 95,000 by 1.023 for each year that $$x$$ that passes. The 1 is necessary part of the calculation because it accounts for the presence of the initial population, and adds growth per year, giving the current population. The population in 2020 can be found by substituting 17 in for $$x$$. Recall that $$x=0$$ indicated year 2003. So, $$P(17)=95,000{(1.023)}^{17}\approx 139,833$$.

B

The initial population was 95,000. It is given that the population declines each year by 2.3%, so we need to multiply 95,000 by 0.023 for each year that $$x$$ that passes. The 1 is necessary part of the calculation because it accounts for the presence of the initial population, and adds growth per year, giving the current population. The population in 2020 can be found by substituting 17 in for $$x$$. Recall that $$x=0$$ indicated year 2003. So, $$P(17)=95,000{(0.023)}^{17}\approx 0$$.

C

The initial population was 95,000. It is given that the population grows each year by 2.3%, so we need to multiply 95,000 by 0.023 for each year that $$x$$ that passes. The 1 is necessary part of the calculation because it accounts for the presence of the initial population, and adds growth per year, giving the current population. The population in 2020 can be found by substituting 17 in for $$x$$. Recall that $$x=0$$ indicated year 2003. So, $$P(17)=95,000{(0.023)}^{17}\approx 149,705$$.

D

The initial population was 95,000. It is given that the population grows each year by 2.3%, so we need to multiply 95,000 by $$(1+{2.3}^{x})$$ for each year that $$x$$ that passes. The 1 is necessary part of the calculation because it accounts for the presence of the initial population, and adds growth per year, giving the current population. The population in 2020 can be found by substituting 17 in for $$x$$. Recall that $$x=0$$ indicated year 2003. So, $$P(17)=95,000(1+{2.3}^{x})\approx 130$$ billion.

Chapter: 17
Standard: G.GPE.7
DOK: 2
1 pt

23.

Find the area of the following figure.

A

$$60{\text{units}}^{2}$$

B

$$60\text{units}$$

C

$$30{\text{units}}^{2}$$

D

$$30\text{units}$$

Chapter: 19
Standard: S.ID.1
DOK: 2
1 pt

25.

Which plot represents the data?

$$\begin{array}{llllllllll}23\hfill & 23\hfill & 23\hfill & 24\hfill & 24\hfill & 24\hfill & 25\hfill & 25\hfill & 26\hfill & 26\hfill \\ 27\hfill & 27\hfill & 27\hfill & 27\hfill & 27\hfill & 27\hfill & 28\hfill & 28\hfill & 28\hfill & 28\hfill \\ 28\hfill & 28\hfill & 28\hfill & 28\hfill & 28\hfill & 29\hfill & 29\hfill & 29\hfill & 29\hfill & 29\hfill \\ 30\hfill & 30\hfill & 30\hfill & 31\hfill & 31\hfill & 31\hfill & 31\hfill & 32\hfill & 32\hfill & \hfill \end{array}$$

A

B

C

D

All of the above.