Answer:
she will be left with 25 dollars
Step-by-step explanation:
2.50 x 8=20
20+3+2=25
Lucia can afford 11 hours of lessons
Second one is 2.7
Eliminate 'y' by equating
<span>8x - 40 = x^2 - 2x - 15 </span>
<span>x^2 - 2x - 8x - 15 + 40 = 0 </span>
<span>x^2 - 10x + 25 = 0 </span>
<span>(x - 5)(x - 5) = 0 </span>
<span>(x - 5)^2 </span>
<span>Hence x = 5 is the only solution for 'x'. </span>
<span>Substitute in to the linear eq;n for 'y' </span>
<span>y = 8(5) - 40 </span>
<span>y = 40 - 40 </span>
<span>y = 0 </span>
<span>Hence the solution in ( x,y) form is ( 5,0).
Shoutout to @lenpol7
Have an amazing day and stay hopeful!
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