Solve.
-In 2005, John invested $19,000 in the stock market. By 2010 his investment had grown to $23,700. Find an equation relating time and the value of the investment. If the market continues to grow at
The same rate, how much will be in his account in 2017? Round to the nearest dollar.
A) $28,400
B) $30,280
C) $25,581
D) $23,701

Question

Quizplus · Accepted Answer

The investment grows linearly from $19,000 in 2005 to $23,700 in 2010, which is a growth of $4,700 over 5 years. The annual growth rate is $4,700 / 5 = $940 per year. The equation for the investment value V at time t years after 2005 is V = 19,000 + 940t. In 2017, t = 12, so V = 19,000 + 940*12 = $30,280.

Solve. -In 2005, John Invested $19,000 in the Stock Market. by by 2010