Answer
a. $T=0.047x^2+1.099x+0.23$
b. $x=30, T=75.95$
$x=40, T=120.19,$
$x=55, T=204.3625$
c. The bar graph shows that as speed Increases, the total stopping distance Increases.
Work Step by Step
a. $R+B=T_{total},$
$T=0.047x^2+1.099x+0.23$
b. $x=30, T=75.95$
$x=40, T=120.19,$
$x=55, T=204.3625$
c. The bar graph shows that as speed Increases, the total stopping distance Increases. For example, for speed $=30$, the total stopping distance is around $75$ and for speed $=50$, the total stopping distance is $175$.
