Pls and i dont have a calculator with me : (
a=98x21x65

What are “like terms”? why can we only add like terms?

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.

Determine the number of girls in a math class with 87 boys if there are 25 girls for every 75 boys