1 pt
DOK: 3

1.

If the pattern is extended, which of these is the likely cost of a 4-bedroom apartment?

A

$715

B

$725

C

$750

D

$775

1 pt
DOK: 3

3.

Which of the following arithmetic series has a sum of 105?

A

the first $7$ terms of $5+2\left(n-1\right)$

B

the first $7$ terms of $7+2\left(n-1\right)$

C

the first $7$ terms of $9+2\left(n-1\right)$

D

the first $7$ terms of $11+2\left(n-1\right)$

1 pt
DOK: 1

4.

The table below shows the partial sums of a series, with *n* being the numbers of terms and ${S}_{n}$ being the partial sums. Is the series arithmetic?

A

Yes, because the second differences of the partial sums are each 4.

B

Yes, because the second differences of the partial sums are each 8.

C

Yes, because the second differences of the partial sums are each 6.

D

No, because the second differences of the partial sums are not constant.

1 pt
DOK: 2

6.

What is the 10th term in the sequence 400, 200, 100, 50, . . . ?

A

$\frac{25}{2}$

B

$25$

C

$\frac{25}{4}$

D

$\frac{25}{32}$

1 pt
DOK: 2

7.

Define the following sequences as a function and find the next term in the sequence.

19, 27, 35, 43 . . .

A

$f\left(n\right)=f\left(n-1\right)+19;50$

B

$f\left(1\right)=19,f\left(n+1\right)=f\left(n\right)+8,n\ge 2;51$

C

$f\left(n+1\right)=f\left(n\right)-8;35$

D

$f\left(1\right)=19,f\left(n\right)=19+8n;51$