Answer:
D
Step-by-step explanation:
Given the 2 equations
4x + 8y = 21 → (1)
y = -
x + 3 → (2)
Substitute y = -
x + 3 into (1)
4x + 8(-
x + 3 ) = 21 ← distribute parenthesis on left side
4x - 4x + 24 = 21 ( subtract 24 from both sides )
0 = - 3 ← not possible
This indicates the system has no solutions
Let the original bill be

, then the final bill after the charges been added are

, where

is the increase in the bill by 0.2 (100%+20% = 120% = 1.2)
The range of the original bill is
200 <

< 800, subtract each term by 25
175 <

< 775, divide each term by

145.83 <

< 645.83
Hence, the range of the original bill is between $145.83 and $645.83
Answer:
Step-by-step explanation:
Remaining area of poster = Area of Big rectangle - Area of small rectangle
= (36*24) - (5*12) =
= 864 - 60 = 804 in^2
Answer:
1/2
Step-by-step explanation:
In the straight line form...
y=mx+b
m is the constant of proportionality or the "K"