Subtract: 16a 2 - 32a + 9 from 12a 2 + 60a - 8.

If a =6, what is the value of 2a(3b + 5c)?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

The difference between two numbers is one. three times the larger number minus two times the smaller number is 9. what are the two numbers