Stacia bought an unlocked iPhone for $289. The tax was 8.5%. What was the total cost of the phone? How did you arrive at your answer?

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.

Find the maximum value of p= 4x + 5y subject to the following constraints :

The ratio of men to women in a certain factory is 3 to 4. there are 228 men.