What is the explicit formula for the sequence 3, 7, 11, 15, 19, ...?
an = 2n +1
an = 2n-1
an = 4n +1
O an=40-1
DONE

What is best way to getting answer for my exam is

Find an equation for the linear function which has slope -10 and x-intercept -7

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