The total revenue $R$ earned per day (in dollars) from a pet-sitting service is given by
$R ( p ) = - 12 p ^ { 2 } + 150 p$ where, $p$ is the price charged per pet (in dollars). Find the revenue when the price per pet is $\$ 4$.
A) $\$ 408$
B) $\$ 438$
C) $\$ 448$
D) $\$ 428$
E) $\$ 418$

Question

The total revenue $R$ earned per day (in dollars) from a pet-sitting service is given by 
$R ( p ) = - 12 p ^ { 2 } + 150 p$ where, $p$ is the price charged per pet (in dollars). Find the revenue when the price per pet is $\$ 4$.
A) $\$ 408$
B) $\$ 438$
C) $\$ 448$
D) $\$ 428$
E) $\$ 418$

Quizplus · Accepted Answer

To find the revenue when the price per pet is $4, substitute $p = 4$ into the revenue equation: $R(4) = -12(4)^2 + 150(4) = -12(16) + 600 = -192 + 600 = \$408$.

The Total Revenue RRR Earned Per Day (In Dollars) from a Pet-Sitting Service Is

The Total Revenue $R$ Earned Per Day (In Dollars) from a Pet-Sitting Service Is