Answer:
y=13x-2..............
4
Step-by-step explanation:
x = -7
f(x) = -2x + 9
f(x) = 23
therefore, f(x) =
-2x + 9 = 23
-2x = 23 - 9
-2x = 14
-x = 14 ÷ 2
-x = 7
80 coins
The answer it 5 x 10^-2!
