1. a model 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+8.3x+4.3, where X is horizontal distance, in meters, from the starting point in the roof and Y is the height, in meters, of the rocket above the ground. round your answer to the nearest hundredth.

Question

208.02 m
416.03 m
0.52 m
208.53 m

2. which of the following functions has a rate of change that stays the same?
y=-4x+10
y=1/2x^2
y=3^x
y=x^2+2

3.how many real number solutions does the equation have?
0=-7x^2+6x+3
one solution
two solutions
no solutions
infinitely many solutions

4.how many real number solutions the equation have?
0=2x^2-20x+50
two
one
no
infinitely

Answer 1

#1. can't round my answer till I have a question
#2. linear functions have a constant slope
#3,4. check the discriminant -- it gives info on the number and kind of roots.

Answer 2

2: y=-4x+10

Answer 3

3: two solutions

Answer 4

4: one