Please help with this question: Tell whether a triangle can have the sides with the given lengths 12, 13, and 24

Anabel uses 10 gallons of gas to drive 220 miles on the highway. if she travels at the same rate, how many miles can she drive on 7 gallons of gas

Acar started driving from city a to city b, distance between which is 620 miles, at a rate of 60 mph. two hours later a truck left city b and started moving towards city a at a rate of 40 mph. what distance from city a is the point where the truck and the car will meet?

Which steps could be part of the process in algebraically solving the system of equations, y+5x=x^2+10 and y=4x-10