Steven has twice as many cds as he has dvds. if d represents the number of dvds steven has, write an expression for the number of cds steven has.

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step-by-step explanation:

is there more to this question?

answer: c

substitute in the values.

for a:

f(0) = 0 + 9

f(0) = 9

a is a solution.

for b:

f(7) = 14 + 9

f(7) = 23

b is a solution.

for c:

f (3) = 6 + 9

f(3) = 15

c is not a solution. it's supposed to be 14.

for d:

f(2) = 4 + 9

f(2)= 13

d is a solution.

i think the answer is b. i hope i !