To serve healthier meals in schools it is estimated to cost $5 per meal. How much would it cost to provide healthy meals to a class of 30 students? It would cost $.

The tile along the edge of a triangular community pool needs to be replaced? ?

Add, subtract, multiply, or divide as indicated. list any restrictions for the variable(s) and simplify the answers when possible. 1) x-2 / x+5 + 3x / 2x-1 2) x+6 / x-6 - x^2 / x+6 3) x+9 / x-4 + x+2 / x^2-11x+28 4) x / x^2-64 + 11 / 2x^2+11x-40 5) 5 / x + 11 / x-3 - x-4 / x^2+2x-15

Solve 13 + w/7= -18 (w/7 is a fraction)