Evaluate 6x-(3y+7)-xy when x=5 and y=3

Acable car begins its trip by moving up a hill. as it moves up, it gains elevation at a constant rate of 50 feet/minute until it reaches the peak at 2,000 feet. then, as the car moves down to the hill’s base, its elevation drops at the same rate.

In trapezoid klmn, kj=19.2 and jm=22.5. identify ln.

Care repairs are less than or equal to $500