Does anyone know how to do this?

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

If jaime wants to find 60% of 320, which table should he use?

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