If three burgers and two fries cost 17.50, and two burgers and three fries cost 15.00, how much does a burger cost?

4.50

Step-by-step explanation:

If you use x for burgers and y for fries:

1) 3x+2y=17.50

2) 2x+3y=15

You can then do a simultaneous equation by multiplying the first equation by 1.5 to cancel out the y (fries) to get x (burgers) on its own

1) 4.5x+3y=26.25

2) 2x+3y=15

By subtracting the two equations you get 2.5x=11.25

Then divide 11.25 by 2.5, you get x =4.5 so a burger is 4.50

connie < felicia < stew

step-by-step explanation:

stew:

we need to find the slope

m = (y2-y1)/ (x2-x1)

    = (2650-795)/(10-3)

    = 1855/7

265 words per minute

connie:

we need to find the slope

m = (y2-y1)/ (x2-x1)

we have two points (0,0) and (4,800)

m = (800-0)/(4-0)

  m = 800/4

    200 words per minute

felicia:

260 words per minute

200< 260 < 265

connie < felicia < stew

step-by-step explanation:

milk=16 large

soda=280 kids

juice box=82 regular

63 soda +63 regular

124 large total