The product of two consecutive integers is 72. the equation x(x + 1) = 72 represents the situation, where x represents the smaller integer. which equation can be factored and solved for the smaller integer?
x2 + x – 72 = 0
x2 + x + 72 = 0
x2 + 2x – 72 = 0
x2 + 2x + 72 = 0

Imogene invested $8,000 in a bank account that pays 8 percent simple interest at the end of each year. her friend invested the same amount in stocks where the growth of the investment is represented as 2,000 times the square root of 2 less than the time lapsed in years. if y1 and y2 represent the amount earned in dollars and t is the time lapsed in years, which system of equations correctly represents the situation?

Rounded to the nearest tenth, what is the value of x

At a book fair, joe bought 24 books at 3 for $5 and had $2 left. how much money did he have at first?