Can anyone me solve this equation?

Jamie is hiking up a small mountain. he climbs up at a constant rate of 300 feet/hour until he reaches the peak at 1,500 feet. after that, he hikes down at the same rate to the base of the mountain. the equation that models jamie’s elevation, e, after t hours is e = . jamie’s elevation will be 600 feet after hours and after hours.

How many solutions does the nonlinear system of equations graphed bellow have?

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.