Question $57,$ R$\mathrm{.}4\mathrm{.}78-$PS

HW Score: $89\mathrm{.}75\%,89\mathrm{.}75$ of $100$

Part $1$ of $4$

points

Points: $0$ of $1$

While driving a car, you see a child suddenly crossing the street. Your brain registers the emergency and sends a signal to your foot to hit the brake. The car travels a reaction distance D $,$ in feet, during the time it takes you to react, where D is a function of the car's speed $r,$ in miles per hour. That reaction distance is a linear function given below. Complete parts $($a$)$ through $($d$).$

$D(r)=\frac{23r+11}{22}$

a$)$ Find $D(5),D(20),D(50),$ and $D(65).$

$D(5)=$

$$

$D(20)=$

$$

$D(50)=$

$$

$D(65)=$

$$

$($Round to the nearest tenth as needed.$)$