Some help with my math !!!!!!!?

A cheetah starts running across the desert. After 5 seconds, the cheetah covered a distance of 145 meters. After 9 seconds, the ceetah covered a total distance of 262 metes. What was the average speed, in meters per second, of the cheetah between the 5- second and the 9- second mark? You may round to the nearest meter. Next, write an equation that will predict the distance covered by the cheetah for a given time, t. Use this equation to predict how far the cheetah will go in one minute?