Ten times a number increased by four is no more than twenty-five.

25 ! the line of best fit is h = 5a + 86. predict the height at age 16.

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.

Graph y = -|x| + 2. click on the graph until the correct one appears.