Answer:
Emily: 
Ally: 
Rosalie: 
Rosaline: 
Step-by-step explanation:
We know that the total is 83.90. Each person's fraction will be
.
the function f(x) = 3x + 5 has a slope of 3 and a y-intercept of (0,5).
Table 1, reproduced below, shows that for every unit increase in x, y increases by 3, and that y=5 when x=0 (which is the y-intercept).
Table 1 is the correct answer.
.x y
-3 -4
-2 -1
-1 2
0 5
First set up the equation to find answer: y=7-x. Then add it to the variable. 3x-1(7-x)=1. So that makes it 3x+-7+-1=1. Add like terms -7+-1=-8, so 3x+-8=1. Now to find x just switch the 8 to the other side. So you end up with 3x=9 since when you take away a number from one side you need to use the opposite value so adding 8 to -8 will cancel it out, then add it to the other, then just divide. 9/3=3, from here just substitute to find y. y=7+3. y=10.
The answer is x=2 and y=5. I hope I helped!