It’s the first answer. The function is y = x*2
Answer:
x = 3
Step-by-step explanation:
10x + 1 = 12x - 5
Subtract 1 from each side
10x = 12x - 6
Subtract 12x from each side
-2x = -6
Divided by -2
x = 3
Use a=

r^2 (r represents your radius of 4 feet)

(4^2)
Answer = 16

^2