Solve the problem
-$\mathrm { A } ( \mathrm { x } ) = - 0.015 \mathrm { x } ^ { 3 } + 1.05 \mathrm { x }$ gives the alcohol level in an average person's blood $\mathrm { x } \mathrm { hrs }$ after drinking $8 \mathrm { oz }$ of 100-proof whiskey. If the level exceeds $1.5$ units, a person is legally drunk. Would a person be drunk after 5 hours?
A) Yes
B) No

Question

Quizplus · Accepted Answer

Substituting $x = 5$ into the given function $A(x) = -0.015x^3 + 1.05x$, we get $A(5) = -0.015(5)^3 + 1.05(5) = -0.375 + 5.25 = 4.875$, which is greater than 1.5 units. Therefore, the person would be legally drunk after 5 hours.

Solve the Problem - A(x)=−0.015x3+1.05x\mathrm { A } ( \mathrm { x } ) = - 0.015 \mathrm { x } ^ { 3 } + 1.05 \mathrm { x }A(x)=−0.015x3+1.05x

Solve the Problem
- $\mathrm { A } ( \mathrm { x } ) = - 0.015 \mathrm { x } ^ { 3 } + 1.05 \mathrm { x }$