Answer:

Step-by-step explanation:
So we have the expression:

And we wish to factor it.
First, let's make a substitution. Let's let u be equal to x². Therefore, our expression is now:

This is a technique called quadratic u-substitution. Now, we can factor in this form.
We can use the numbers -3 and -2. So:

For the first two terms, factor out a u.
For the last two terms, factor out a -3. So:

Grouping:

Now, substitute back the x² for u:

And this is the simplest form.
And we're done!
Answer:
The average rate of change is 115 cupcakes per hour approximately
Step-by-step explanation:
45 million *

= 45million * 16 = 720million
Or you can use

A is equal to 45 million
To find the rate, k, we can plug in:




Knowing that t = 4

Answer:
£32.76
Step-by-step explanation:
21/500=0.042
780x0.042 = 32.76