Answer:
Step-by-step explanation:

Answer:3.14
Step-by-step explanation:
r=pi*r sqaured
-25=-4r+5
Subtract 5 to each side
-25-5=-4r+5-5
-30=-4r
Divided -4 to each side
-30/-4=-4r/-4
7.5=r
Check:
-25=-4r+5
Substitute r with 7.5
-25=-4(7.5)+5
-25=-30+5
-25=-25. As a result, r=7.5. Hope it help!
Answer:
(1,2) and slope = 0
Step-by-step explanation:
Look where the line crosses the y and because the line is parallel to the x the slope is equal to zero