Slope = (1+3)/(1+2)
slope = 4/3
hope that helps
80=x+3x
80=4x
20=x
There are 20 girls.
A business' profit margin is the ratio between the gross profit and net sales. It's ideal for a business to have a profit margin closest to 1. For the given situation, Sally has a gross profit of $32, 508.63 and a profit margin of 68% or 0.68. Thus, we have


Therefore, the net sales earned by Sally's hair salon is $47, 806.81.
Answer: D. $ 47, 806.81
Because the student scored 73/100 on the first test, their current average is 73%.
To calculate the avergae with the next test score, you add both percentages the student gets together and then divide by 2.
79 = (73 + x) / 2
Multiply by 2 on both sides
158 = 73 + x
Subtract 73 on both sides
x = 85
So the student needs to get at least an 85/100 on the next test to maintain a 79 average.