Let f(x) = 5x – 3 and g(x) = -2x + 7. Find f(x) + g(x).

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

Anyone know? will mark brainliest if correct

Amodel rocket is launched from a roof into a large field. the path of the rocket can be modeled by the equation y = -0.04x^2 + 8.6x + 4.8, where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket above the ground. how far horizontally from its starting point will the rocket land? a. 0.56 m b. 215.56 m c. 431.11 m d. 215.74 m