Round your answer to the nearest whole number, if necessary.
-The distance an object moves in a straight line (in meters) is given by the function $\mathrm{f}(\mathrm{t})=9 \mathrm{t}^{2}-7 \mathrm{t}$, where $t$ is the time in seconds the object has been in motion. How far will an object move in 12 seconds?
A) 288 meters
B) 900 meters
C) 1212 meters
D) 24 meters

Question

Quizplus · Accepted Answer

To find the distance the object moves in 12 seconds, substitute $t = 12$ into the function $f(t) = 9t^2 - 7t$. This gives $f(12) = 9(12)^2 - 7(12) = 9(144) - 84 = 1296 - 84 = 1212$ meters.

Round Your Answer to the Nearest Whole Number, If Necessary f(t)=9t2−7t\mathrm{f}(\mathrm{t})=9 \mathrm{t}^{2}-7 \mathrm{t}f(t)=9t2−7t

Round Your Answer to the Nearest Whole Number, If Necessary $\mathrm{f}(\mathrm{t})=9 \mathrm{t}^{2}-7 \mathrm{t}$