3x2 = 81
b. (x - 1)(x + 1)-9 = 5x
C. X - 9x + 10 = 32
d. 6x(x - 9) = 29

Kayla has a $500 budget for the school party. she paid $150 for the decorations. food will cost $5.50 per student. what inequality represents the number of students, s, that can attend the party?

An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years

A50% increase followed by 33 1/2% decrease