Write an expression that is equivalent to 4n – 12 + 8y + (-3n).

Brent wants to know what is 5 x 1/2

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.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?