Answer:
C. x = 6
Step-by-step explanation:
2*6 + 4 = 16
Y-4X =3 ; 2x-3y=21
Y= 3+ 4x
2x -3( 3+4x)= 21
2x- 9- 12x= 21
-10x -9= 21
-10x -9+9= 21+9
-10x = 30
X= 30/-10= -3
Y= 3+4x = 3+ 4* (-3)= 3-12= -9
Answer:
Nonproportional
Step-by-step explanation:
A line that is proportional will always pass through the origin (0, 0). If it does pass through the origin, then x and y have a proportional relationship.
Best of Luck!
Answer:
42/100. Simplified would be 21/50]
Step-by-step explanation:

1. Find the percent markup.
Markup ($) = percent markup (%) x original cost ($)
A computer store buys a laptop for $635 directly from the manufacturer (Dell). The markup is $570. What is the percent markup on the computer?
The percent markup is: <u> </u><u>90</u><u> </u>%

FORMULA: Percent of Markup = Markup/Cost x 100
- = $570/$635 x 100
- = 0.90 x 100
- = 90%