Which of the following will result in a rational number? Select all that apply. A. 645+9√4
B. 645−5√7
C. 645×9√4
D. 645÷5√7
help me please

In what form is the following linear equation written y=9x+2

Barrett is comparing the membership fees for two museums.the art museum charges a one-time fee of $8.25 plus $2.25 per month. the science museum charges a one-time fee of $10.75 plus $3.50 per month. how much does barrett save by joining the art museum instead of the science museum?

The number 72 lies between what perfect squares