Answer:
°
Step-by-step explanation:

If you're asking how to simplify, then this is how you do it.
when a power meets another power but in brackets, then you have to multiply the powers. ¼ × 4 would be 1. i simplified 81 to 3⁴.
Answer:
C
Step-by-step explanation:
Decreased price = 16.50 - 12 = $ 4.50
Percent of decrease =

= 27%
Answer:
(-2,2)
Step-by-step explanation: