There are 7 girls to every 5 boys. If there are 84 students in all, how many are boys?

Use composition to determine if (x) or h(x) is the inverse of f(x) for the limited domain x2-1.

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

Acaterer charges $500 plus $30 per guest to cater a wedding. walt and traci don't want to spend more than $8000 on catering. write and solve an inequality in terms of the number of guests, g, that can be invited. a) 30g ? 8000; g ? 267 b) 500g < 8000; g < 16 c) 500 + 30g < 8000; g < 250 d) 500 + 30g ? 8000; g ? 250