Answer with Explanation please! Thank you!

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance

A(1,1) b(-3,0) c(-4,-1) d(3,-2) drag it to correct position