You buy painting supplies for $12, and you charge $3 per person to paint faces. How many faces will you need to paint to earn $1
5 in profit?
2 answers:
You will need to paint 9 faces in order to earn $15. I solved this problem by setting up an equation using the given information. The equation is 15=3x - 12. 15 is the goal amount of profits. 3x represents $3 per person/face charge. I subtracted $12 from that because it is the money used to buy paint supplies. After that, i solved for x. The answer is 9 faces. Hope this helped you! I included a picture of my work :))
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Answer:
60
Step-by-step explanation:
We have been given the matrix;
For a 2-by-2 matrix, the determinant is calculated as;
( product of elements in the leading diagonal) - (product of elements in the other diagonal)
determinant = ( 5*4) - (8*-5)
= 20 - (-40) = 60