Answer:
R = 10.
Step-by-step explanation:
R/10 + 4 = 5
R/10 = 1 ( R/10 + 4 = 5 )
-4 -4
<u><em>R=10</em></u>
The first one I believe
3.
f(-2) = 3(-2)^2 + 4(-2) - 1
= 12 - 8 - 1
= 3.
Answer in screen shot below
759.88 square inches
