Question

Given the function f(x)=4(1−5)+3, for what values of f(x)=15?

a) x=2
b) x=4
c) x=3
d) x=1

Answer 1

To find the values of x for which f(x) = 15, solve the equation 4(1-5x) + 3 = 15.

Step-by-step explanation:

To find the values of x for which f(x) = 15, we can substitute 15 for f(x) in the given function and solve for x.

4(1 - 5x) + 3 = 15

4 - 20x + 3 = 15

-20x + 7 = 15

-20x = 8

x = -8/20

x = -0.4

Therefore, none of the given options (a, b, c, d) is the correct value of x for which f(x) is equal to 15.