A forest fire spreads in a circular pattern with the radius changing at the rate of 50 miles per hour. At what rate is the fire spreading when the diameter of the fire is 310 miles? A.
48.694 m2/h
B.
155 m2/h
C.
15,500 m2/h
D.
48,694.69 m2/h

What is the missing constant term in the perfect square that starts with x^2 -20x

If, while training for a marathon, you ran 60 miles in 2/3 months, how many miles did you run each month? (assume you ran the same amount each month) write your answer as a whole number, proper fraction, or mixed number in simplest form. you ran __ miles each month.

Sally deposited money into a savings account paying 4% simple interest per year.the first year,she earned $75 in interest.how much interest will she earn during the following year?