Evaluate 2a + 3b for a = -1 and b = 0. 1. -1 2.-2 3. 1 1/2 4. 1/2 answer asap !

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.

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

Mike wants to make meatloaf. his recipe uses a total of 8 pounds of meat. if he uses a 3 to 1 ratio of beef to pork, how much pork will he use? enter your answer as a mixed number in simplest terms.