Question

a new school has opened in the area. the school did not have a yearbook before 2018. in 2018 there were 500 yearbooks sold. since 2018, there have been 742 yearbooks sold each year. which function can be used to find y, the number of yearbooks sold t years after 2018? a ( y = 500t + 742 ) b ( y = 742t + 500 ) c ( y = 742t ) d ( y = 500t )

Explanation:

Step1: Identify initial value

In 2018 (when $t=0$), $y=500$. This is the y-intercept.

Step2: Identify annual rate

Each year after 2018, 742 yearbooks are sold. This is the slope ($m=742$).

Step3: Use linear function form

Linear function: $y = mt + b$, where $m$=slope, $b$=initial value. Substitute values: $y=742t+500$.

Answer:

B. $y = 742t + 500$