Answer:
47
Step-by-step explanation:
(29+19)+(17-18)
48+17-18
48-18+17
30+17
47
Answer:
C: 8.96
Step-by-step explanation:
We know taht ZX is similar to PQ. We can now set up the ratio of 6.4: 5.12
This ratio gives us .8:1
Multiply VX by the ratio to find its corresponding similar side of RQ
(11.2) * .8 = 8.96
You have to take the x to on side and numbers to the other but in order to do that you'll have to divide -3 from both sides and then just solve the equation.
Let the original bill be
![x](https://tex.z-dn.net/?f=x)
, then the final bill after the charges been added are
![1.2x+25](https://tex.z-dn.net/?f=1.2x%2B25)
, where
![1.2](https://tex.z-dn.net/?f=1.2)
is the increase in the bill by 0.2 (100%+20% = 120% = 1.2)
The range of the original bill is
200 <
![1.2x+25](https://tex.z-dn.net/?f=1.2x%2B25)
< 800, subtract each term by 25
175 <
![1.2x](https://tex.z-dn.net/?f=1.2x)
< 775, divide each term by
![1.2](https://tex.z-dn.net/?f=1.2)
145.83 <
![x](https://tex.z-dn.net/?f=x)
< 645.83
Hence, the range of the original bill is between $145.83 and $645.83