A rocket carrying fireworks is launched from a hill 20 feet above a lake. The rocket will fall into the lake after exploding at its maximum height. The rockets height above the surface of the lake is given by the function h(t)= -16t^2+48t+20. After how many seconds after it is launched will the rocket hit the lake ? Show all work

Given tan∅=4/3 and π< ∅< (3π)/2; find cos2∅ a. -24/25 b. 24/25 c. -24/7 d. -7/25

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Me asap on # : explain how factoring a trinomial, ax^2+ bx+ c, when a does not equal 1 different from factoring a trinomial when a = 1.