Which of the following equations represent a proportional relationship a: y=12.5x b: y= 4x-1 c: x+y=3 d: y=3x (squared)

Which ratio is equivalent to 10: 85

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

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?