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:
$2.5
Step-by-step explanation:
4 people went to the movies and spent $ 38 ( 9.50* 4= 38) since 48-38 = 10
they totally have 10 dollars left. 10/4 = 2.5 They each $2.5 left
That's what the graph should look like and I wrote the rest on there just incase you needed any other information.
(fog) (x) = (5x - 7) / (5x - 4)
The denominator cannot be zero so the domain is All real x except x = 4/5
Answer:
subtract 10-7 which is 3 cookies