Mari is adding (-7) and (-2). She adds their absolute values and says the answer is 9. What did Mari forget?

A
that 0 is neither positive nor negative

B
to move left on the number line

C
to keep the sign of the larger integer

D
to keep the sign of the two integers being added

For the equations below which statement is true ?

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.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.