Solve the problem.
-The position of an object moving in a straight line is given by $\mathrm { s } = 11 \mathrm { t } ^ { 2 } - 7 \mathrm { t },$ where s is in where s is in meters and t is the time in seconds the object has been in motion. How far will an object move in 15 seconds?
A)1410 meters
B)60 meters
C)900 meters
D)2370 meters

Question

Quizplus · Accepted Answer

To find the distance the object moves in 15 seconds, substitute $ t = 15 $ into the equation $ s = 11t^2 - 7t $. This gives $ s = 11(15)^2 - 7(15) = 11(225) - 105 = 2475 - 105 = 2370 $ meters.

Solve the Problem s=11t2−7t,\mathrm { s } = 11 \mathrm { t } ^ { 2 } - 7 \mathrm { t },s=11t2−7t,

Solve the Problem $\mathrm { s } = 11 \mathrm { t } ^ { 2 } - 7 \mathrm { t },$