Answer:
0.5 ft per min
Step-by-step explanation:
in 80 minutes the radius expanded by 40%
we can set up a proportion of percent change over minutes:
.4/80 = r/1
cross-multiply to get:
80r = .4
r = .005 or 1/2 of a foot per minute.
Hope It Helps :)
Answer:
C. 55
3.5x + 15
Step-by-step explanation:
i found it on google
Answer:
A
Step-by-step explanation:
b^2 = 400
b = 20.............