Problems 7-12 simplify each expression,
7.
(4+ 5)²
8.
(3t2 + 1)(2t– 9)
14.2 2(0)5 15
1602 +40 + 25
9.
-7y(2y3 - 3y - 9)
10.
(4x - 7) + (x + 3)2

7. 81

8. 6t³-27t²+2t-9

0

1667

9. -14y/\4+21y²+63y

10. 6x-1

whose power in the senate is equal to the power of the speaker of the house?

step-by-step explanation:

the factors of 24 are 1, 2, 3, 4, 6, 8, 12 and 24. hope this ! mark brainliest! you v much! : )