Question

If f(x)= 20-3x, then find a if f(a)= -11.

Answer 1

53

Explanation:

if f(a)= -11 the the equation is: 20-3(-11)

First, multiply -3 and -11:

20-3×(-11)

20+33

Now, add:

20+33= 53

Hope this helps!! <3