What is the product? [ 5 -2 -6 2] x [ -1 -1 ]

Does anyone know how to solve and graph this: 4 + | a + 2 | < 7the only part i don't get is the "4 +"

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

Matt had 5 library books. he checked out 1 additional book every week without retuening any books. whats the matching equation