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:
The answer is "(5, -6)"
Step-by-step explanation:
Given:
The Pre-image line at point B is: (3, 4)
Solution:

The coordinates of B point is (5,-6).
You multiply Q and a to get 240, because 15 x 16 = 240.
Answer:
y^5
Step-by-step explanation:
y^-2/y^-7
When we divide exponents with the same base, we subtract the exponents
y^ ( -2 - -7)
y^ ( -2+7)
y^ 5
Answer:
b
Step-by-step explanation: