Rewrite using a single positive exponent.
57
54

Evaluate the expression for the given value of the variable. 5×(h+3) for h=7

Complete the table for different values of x in the polynomial expression -7x2 + 32x + 240. then, determine the optimal price that the taco truck should sell its tacos for. assume whole dollar amounts for the tacos.

Use the elimination method to solve the systems of equations. choose the correct ordered pair. 7x+4y=39