If a = 2 b=-3 then find the value of 2a - 4b

How do you multiply a mixed fraction by a regular fraction

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need