Answer:
R290.1
Step-by-step explanation:
Let
x = charge before he put his prices up
New charge = R320
Percentage increase in price = 7%
x + 7% of x = 320
x + 0.07 * x = 320
x + 0.07x = 320
1.07x = 320
x = 320/1.07
x = 299.06542056074
Approximately
x = R290.1
Charge before he put his prices up = R290.1
Answer:
(x+7) is not a factor
Step-by-step explanation:
we know that
If (x+7) is a factor of f(x)
then
For 
Verify
we have

Substitute x=-7




therefore
(x+7) is not a factor
-144 is undefined I just did this like a min ago lol but hope this works out for you if so leave a like and see if you have other questions thanks for using Brainly
Answer:
She pays $15.74
Step-by-step explanation:
Divide 425 by 27
Answer:
rational
Step-by-step explanation: