The distance from the center of a round table top to the edge of the table top is 4 ft. what's the area of the table top?

a. 16 sq. ft.
b. 38 sq. ft.
c. 50.24 sq. ft.
d. 25.14 sq. ft.

Jabari is power washing houses for a summer job. for every job, he charges an initial fee plus $30 for each hour of work. his total fee for a 4 -hour job, for instance, is $170 . jabari's total fee,f, for a single job is a function of the number,t, of hours it takes him to complete the job. write the function's formula.