(Middle school math) I just need to know the probabilities for letter a. Thank you.

Write a division equation you could use to find a, the number of miles ava is in charge of. what is the value of a? write your answer is simplist form

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

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