Answer:
Step-by-step explanation:
x =
using the ' laws of exponents '
• × =
• ÷ =
• ()^n =
× = ÷ =
=
equating the exponents since bases on both sides are 7
4x = 5 - 3x
7x = 5 ⇒ x =
The rate of change is -2
f(b)-f(a) 12-2 10
---------- = ------------ = -------- = -2
b-a 1-6 -5
check the attachments for the solution