Plz answer asap..how do you grid -5.20

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 can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10