Find the value of -7 + (-9) + 11 + 8.

-35
2
3
-13
i got 21 but that's not the right answer so can someone me?

Apackage of five erasers cost 0. $.39 at this rate how many how much would 60 erasers cost in dollars and cents

The volume of a rectangular prism is found by multiplying the length, width, and height of the prism. a rectangular prism has a width of 5x^2units, a length of 7x^3 units and a height of 2x^4 units. which is the volume of the prism in terms of x?

Write a function rule for  “the output is  5 less than the input.” let  x be the input and let  y  be the output.