Please help this is timed

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

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Urgent? will give brainliest given that the blue triangle is a right triangle, which expression correctly gives the area of the red square? a) a2 + b2 b) a2 - b2 c) a2 - c2 d) c2 - a2