Question 352207
A new car worth $45000 is depreciating in value by $5000 per year. Write a formula that models the car's value, y, in dollars, after x years. Use the formula from part (a) to determine after how many years the car's value will be $10000. Graph the formula from part (a) in the first quadrant of a rectangular coordinate system. Then show your solution to part (b) on the graph.
a) {{{y=45000-5000x}}}
now plug in y=10000
{{{10000=45000-5000x }}} subtract 45000 from each side
{{{-35000=-5000x }}} divide each side by -5000
{{{7=x }}}
So after 7 years the car will be worth 10000.

{{{ graph( 500, 500, 0, 100, 0, 45000, 45000-5000*x) }}}  

I did not see question b) in the problem.