Question

Find the value of x so that the function has the given value.

Answer 1

Answer:

n(x)=4x+15;n(x)=7

n(7)=4(7)+15

=》n(7)=28+15

28+15=43

n(7)=43

Answer 2

7=4x+15
-8=4x
x=-2

hope this helps !