Suppose y varies at a constant rate of change of 4 with respect to x (so that Ay = 4. Ax), and when x = 1, y = -5. a. If 3 varies from 3 = 1 to 3 = 6, the change in x is:
Az =
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5
b. If 3 varies from x = 1 to x = 6, the change in y is:
Ay =
25
*
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c. What is the value of y when = 6?
y =
21
*
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if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads

a) 7x=7

step-by-step explanation:

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.