Which relation is a function?

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

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

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2