Answer:
a.) 70 km per hour
b.) 245 km
Step-by-step explanation:
a.) Find how far the car can travel per hour by dividing:

The car travels at a rate of 70 km per hour.
b.) Make an equation with <em>h</em> as hours and <em>d</em> as the distance the car can travel:

Insert the hours:

Simplify:

At a rate of 70 km per hour, in 3.5 hours, the car can travel a total of 245 km.
Answer:
I hope this helps!
Step-by-step explanation:
3y(5x+3)=15yx+9y
2y(2x+3)=4yx+6y
4y(x+2)=4yx+8y
3y(7x+2)=21yx+6y