Can someone me with these 3 answers. aiaf you can not see them make sure to click on the image.

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

Divide. –4.2 ÷ 6 = a –0.7 b 0.7 c –7 d 7 me

Find the measure of angle c in the following triangle.