Solve using the multiplication principle don't forget to check

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

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