Answer: (x) =
Step-by-step explanation:
f(x) = 9x - 8 , to find the inverse of f(x) , replace f(x) with y , then the equation becomes
y = 9x - 8 , then make x , the subject of the formula ,
9x = y + 8
x =
Finally , replace x , with (x) and y with x , so we have
(x) =
Answer:
Step-by-step explanation:
x / 2.25 seconds = 28 times / 12 seconds
multiply by sides by 2.25 seconds
x / 2.25 seconds * 2.25 seconds = 28 times / 12 seconds * 2.25 second
x = 2.3333333 times/ second * 2.25 seconds
x = 5.8333
About 57 red pens were sold
<h3>Ratios and proportion</h3>
According to the information given:
number of packs of black pens sold: number of packs of red pens sold: number of packs of green pens sold = 7:3:4
- Total ratio = 7 + 3 + 4 = 14
- Total pen sold = 268
Number of red pens sold = 3/14 * 268
Number of red pens sold = 57 pens
Hence about 57 red pens were sold
Learn more on ratios here: brainly.com/question/2914376
Answer:
78
Step-by-step explanation: