Can anyone pls help me with number 4 and 5.

The table represents a linear function. what is the slope of the function? –6 –4 4 6

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.

Use the second shift theorem to find the inverse laplace transform of (e^−3s) / (s^2 + 2s − 3)