Answer:
f(t) = 70 ⋅ 0.995^t
Step-by-step explanation:
A=πr2
Circumference = 2πr
20π = 2πr
r=10
π=3.14
A=3.14 * 10^2
=314 cm^2
Hassan
Hassan got 57%
Kate got 40%
Hope this helped!
-9=v/4
cross multiply
-9×4=v
-36=v
v=-36