Answer:
x = 9
Step-by-step explanation:
Using the rule of exponents
× ⇔
Given
= × = =
Since the bases on both sides are common, then equate the exponents
x + 8a = 25 + ax - 7a
x = 5
5 + 8a = 25 + 5a - 7a
5 + 8a = 25 - 2a
5 + 10a = 25
10a = 20
a = 2
20 + 2 units
because the perimeter of ∆ ABC is the answer 20 + 2
17/2 = 8.5 hours per week
8.5 x 5 = 42.5 hours in 5 weeks
