Y = -x²+4
y = 2x+1
solve the system of equations

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

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