<u><em>Answer:</em></u> <em><u>290 calories in a cheeseburger and 230 calories in fries.</u></em>
<em><u>x = calories in a cheeseburger</u></em>
<em><u>y = calories in an order of small fries</u></em>
<em><u>Four cheeseburgers and five small fries have 2,310 calories. Therefore</u></em>
<em><u>4x + 5y = 2310 (1)</u></em>
<em><u>Three cheeseburgers and two small fries have 1,330 calories. Therefore</u></em>
<em><u>3x + 2y = 1330 (2)</u></em>
<em><u>Equations (1) and (2) model the given situation.</u></em>
<em><u>To solve, multiply (1) by 2, and multiply (2) by 5 to obtain</u></em>
<em><u> 8x + 10y = 4620 (3)</u></em>
<em><u>15x + 10y = 6650 (4)</u></em>
<em><u>Subtract (3) from (4).</u></em>
<em><u>7x = 2030</u></em>
<em><u>x = 290</u></em>
<em><u>From (1), obtain</u></em>
<em><u>5y = 2310 - 4*290 = 1150</u></em>
<em><u>y = 230</u></em>
<em><u> x = 290, y = 23</u></em>
<u><em>Hope this helps!</em></u>
<u><em>:)</em></u>
