Solve the Problem $0.07 \mathrm {~d} ^ { 3 / 2 }$

Multiple Choice

Solve the problem.
-The algebraic expression $0.07 \mathrm {~d} ^ { 3 / 2 }$ describes the duration of a storm, in hours, whose diameter is $\mathrm { d }$ miles. Use a calculator to determine the duration of a storm with a diameter of 7 miles. Round to the nearest hundredth.

A) $1.3 \mathrm { hr }$
B) $0.34 \mathrm { hr }$
C) $0.19 \mathrm { hr }$
D) $18.52 \mathrm { hr }$