An earthquake was felt throughout a circular area of 1,808.64 square miles. what was the radius of the circular area?
a. 576 miles
b. 20 miles
c. 24 miles
d. 12 miles

Solve the problem. a student earned grades of c, a, b, and a in four different courses. those courses had these corresponding numbers of credit hours: 4, 5, 1, and 5. the grading system assigns quality points to letter grades as follows: a = 4, b = 3, c = 2, d = 1, and f = 0. compute the grade point average (gpa) and round the result to two decimal places. 3.40 3.50 8.75 2.18