What is 0.112 times 7.2 and how to solve the problem

Is there an x intercept in the equation 60*1.15^x

Is (root2 -2)^2 rational or irrational. show the steps and answer fast

Renee hiked for 6 3/4 miles. after resting, renee hiked back along the same route for 5 1/4 miles. how many more miles does renee need to hike to return to the place where she started? represent your answer as a simplified mixed number, if necessary.