Solve by factoring:
a. x2 + 7x +12 = 0

b. 2x2 – 9x = x2 – 20

me you and show all work.

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m