Julian needs to create an ad for his company that manufactures mobile phones. he has come up with an idea for the ad, but he needs a quality check before the actual product development begins. julian is using the
method of advertising testing.

I don't know what you mean but if I am correct I guess he's going to randomly choose devices to test them

the answer is 4.8 units on e2020.

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!