Noor has 4 cups of hot chocolate in his thermos. he offers 5/8 cup servings of hot chocolate to some friends. what is the greatest number of friends noor can offer hot chocolate to?

6.4

Step-by-step explanation:

4 / (5/8) =   4/1 x 8/5 = 32/5 = 6.4   you invert 5/8 then multiply

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18

what graph

step-by-step explanation: