Achocolate chip cookie recipe calls for 15 cups of flour for 20 dozen cookies. how many cups of flour are needed for 144 cookies?

Ineed with number 17 i don’t get it at alll

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?