What we know:
Carpet cleaner a charges $28.25 plus $18 a room. Carpet cleaner B charges $19.85 Plus $32 a room.
What we need to find:
Which equation can be used to find the number of rooms for which the total cost of both carpet cleaners is the same?
28.25 + 18x=19.85 + 32x
Sevenhundred and eighty thousand
Answer:
11
Step-by-step explanation:
X+8=19
X=19-8
X=11
The function of f(x)=-x+4x-3 is 3x-3. I hope this helps. :)
Answer:

Step-by-step explanation:
We have been given that your friend borrows $100 from you and promises to pay you back $109 in 8 months.
We will use simple interest formula to solve our given problem.
, where,
A = Amount after t years,
P = Principal amount,
r = Annual interest rate in decimal form,
t = Time in years.
Convert 8 months to year:










Convert to percent:

Therefore, you are charging 12% APR to you friend.