Give an example of an exponential function that goes through the point (0,4)

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.

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base