Answer:
n = - 5
Step-by-step explanation:
Using the rules of exponents
× ⇔
⇔
Consider the left side
=
= , then
Since the bases on both sides are the same, equate the exponents
2 + n = - 3 ( subtract 2 from both sides )
no 1) is 85%
no 2) is 32 - 80 = -48
7 markers cost $8.95
9x = 11.50
x = 11.5/9 = 1.278
Therefore, 7 markers, or 7x = 7(1.278) = 8.946