Four times the difference of a number and 5 is the same as 5 increased by four times the number plus five times the number

What is the product of the radical expression. (7-2square root) (8+2 square root)

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.

Ineed with number 6 , explain how to get 1978