What is the first step in solving for x? 12 + 2n = 6n - 2n + 3)
a. simplify the right side by combining the 6n and -2n
b. distribute the -2 to both terms in the parentheses
c. add 6n to both sides to move the n's to the left side
d. distribute the 2 to both terms in the parentheses

Solve: 3x+y=6 4x-2y=18 show all work !

If 25% of y is 30, what is 60% of y?

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.