An airplane travels at 150 miles per hour. the total distance traveled is 637.5 miles. which equation should be solved to determine the number of hours (h) traveled?

The distance (d) traveled by the airplane is the product of multiplying the speed (s) and the trip took (h). The equation is shown below, 
                                           d = s x h
Substitute the known values to the equation, 
                                       637.5 miles = (150 mile/ hour) x h
Manipulating the equation,
                                       h = (637.5 miles) / (150 mile/ hr) 
h is equal to 4.25 hours. 

31 is prime. and it’s prime factorization is just 31.