Please answer the following in fraction form

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

Use the quadratic function to predict f(x) if x equals 8. f(x) = 25x2 − 28x + 585

Last week jason walked 3 1/4 miles each day for 3 days and 4 5/8 miles each day for 4 days. about how many miles did jason walk last week?