What is the first step when rewriting y=-4x^2+2x-7 in the form y=a(x-h)^2+k?
a. 2 must be factored from 2x-7
b.-4 must be factored from -4x^2+2x
c. x must be factored from -4x^2+2x
d.-4 must be factored from -4x^2-7

Data for the height of a model rocket launch in the air over time are shown in the table. darryl predicted that the height of the rocket at 8 seconds would be about 93 meters. did darryl make a good prediction? yes, the data are best modeled by a quadratic function. the value of the function at 8 seconds is about 93 meters. yes, the data are best modeled by a linear function. the first differences are constant, so about 93 meters at 8 seconds is reasonable. no, the data are exponential. a better prediction is 150 meters. no, the data are best modeled by a cubic function. a better prediction is 100 meters.