Answer:
.07 aka 7%
Step-by-step explanation:
decay, (1 - .07) = .93
see below
Since (0.93) means 93%, it is a decay of 7%
93% - 100%
= -7%
it is a decay
18m?
11/12
Find common denominator
in this case it's 12
9/4=27/12
4/3=16/12
Subtract
27/12 - 16/12 = 11/12
V = (1/3)pi(r^2)h (the first one)