Evaluate
4(x+5)(2+1)
(2+3)(2-3)
for x = 5.

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

If 7x=9y, y/z = 7/5 , then x/z = (a) 2/7 (b) 7/9 (c) 9/5 (d) 9/7 (e) 5/9

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?