## Algebra 1

To find the year in which about 22 million bicycles were sold, substitute 22 for y in the equation. $22=0.3x+15$ Create a table to solve the equation. The table will list possible values of x and the result when that value for x is used in the equation. Look for the result closest to 22. $\underline x\ \ \ \ \underline{0.3x+15}$ $10\ \ \ \ \ \ 18$ $20\ \ \ \ \ \ 21$ $21\ \ \ \ \ \ 21.3$ $22\ \ \ \ \ \ 21.6$ $23\ \ \ \ \ \ 21.9\longrightarrow$ 23 years after the initial date is the nearest to 22 million $24\ \ \ \ \ \ 22.2$ To find the actual year, you must add 1981 to the number of years since 1981. $1981+23=2004$