a store that buys and sells used video games buys a game at a cost of $9 and sells it at a selling price of $12. find the markup. then find the percent markup.

a) markup = $3

b) markup as a percentage of cost is 33.3%

Step-by-step explanation:

Markup

... markup = selling price - cost

... = $12 - 9

... markup = $3

Markup as a Percentage of Cost

To find the percent markup, divide the markup by the reference value and multiply the ratio by 100%. The reference value for markup is usually cost price, but sometimes may be selling price.

... markup / cost × 100% = 3/9×100% = 33 1/3% ≈ 33.3%

When the markup is figured as a percentage of selling price, the result is usually called margin. Some folks are not very careful in distinguishing markup from margin.

there is no grid

step-by-step explanation:

the graph in the attached figure

step-by-step explanation:

we have

using a graphing tool

the graph in the attached figure

the roots are ( x-intercepts) x=-0.5,x=1,x=3

the y-intercept is the point (0,3)