You would have to divide by 3.14 to find the radius squared, and to find the diameter, just add the radius plus the radius.
Answer:
Step-by-step explanation:

Substitute x = 5 in the equation.

Therefore, the answer is -15 or last choice when x = 5.
Answer:
y=10x-2x ................
Answer: slope =1/2 y intercept (0,6)
Step-by-step explanation: use the slope and y intercept form y=mx + b