Can someone help me with this math homework please!

Plz me plz i will give a brain just plz

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

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.