When Tom found the difference −16 − (−13), he got −29. Complete the statement that explains what Tom might have done wrong. Tom found instead of −16 − (−13).
To subtract −13, he should add the opposite of −13. So, −16 + 13 = .

The gades foundation and hbm corporation are eager to donate generously to their favorite charities. the gades foundation donated $250 in the first month, and each month afterward their cumulative donation total increases by 100$ the hbm corporation donated $64, in the first month, and each month afterward their cumulative donation total increases by 75%. in which month will the hbm corporation's cumulative donation total first exceed the gades foundations' cumulative donation total?

Can someone explain the elimination method to me for this problem?

Mila's dog weighs 4 pounds more than 8 times the weight of keiko's dog. which expression could be used to fine te weight of mila's dog?