A rocket launches from the launch pad at an upward velocity of 160 ft/s. Its height h in feet after t seconds is given by the function h = -16^2 + 160t + 18. How long (time) will it take the rocket to reach its maximum height? What is the rockets maximum height?​

answer: c

because if you look at the chart you can see a pattern and compare it to the question he simplify out your

but i think the formula is f(x)=6x

b, i believe, but not sure.

this is a direct variation proportion. y = kx

y is the total amount due, k is the constant of variation, and x is the number of texts sent.

plug in the 3.20 and the 16 to solve for the "k". this is the constant of proportionality. it is the value that will not change.

3.20 = k(16). solving you get $.20 per text.

the equation would then be y = .20x