Which statements are true? Select each correct answer.
A) 9g^3 + 12 = 3(3g^3 + 4)
B) 35g^5 − 25g^2 = 5g^2 (7g^3 − 5)
C) 24g^4 + 18g^2 = 6g^2 (4g^2 +3g)
D) 4g^2 − g = g^2 (4 −g)

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.