Answer:
7 weeks.
Step-by-step explanation:
Will works 7 hours a day, 6 days a week. So total number of hours worked by Will is,
![=7\times 6=42](https://tex.z-dn.net/?f=%3D7%5Ctimes%206%3D42)
hours
He earns £9.20 an hour, so total money earned in a week by Will will be,
![=42\times 9.20=\£386.4](https://tex.z-dn.net/?f=%3D42%5Ctimes%209.20%3D%5C%C2%A3386.4)
As he shares with his mother in a ration of 5:2, so he gets 2 parts out of 7 parts. (as 5+2=7)
So the actual amount saved by Will is,
![=386.4\times \dfrac{5}{7}=\£276](https://tex.z-dn.net/?f=%3D386.4%5Ctimes%20%5Cdfrac%7B5%7D%7B7%7D%3D%5C%C2%A3276)
The price of the car is £1932, so the number of week that Will will take is,
Answer:
the hours (3)
Step-by-step explanation:
It is the variable that you change to see the outcome (Changing the time will change the price)
Answer:
A function is a relationship or expression involving one or more variables.
Step-by-step explanation:
We have been given that a particular type of cell increases by 75% in number every hour. We are asked to find the number of cells present at the end of 12 hours if there are initially 4 of these cells.
We will use exponential growth formula to solve our given problem.
, where,
y = Final amount,
a = Initial amount,
r = Growth rate in decimal form,
x = Time.
![75\%=\frac{75}{100}=0.75](https://tex.z-dn.net/?f=75%5C%25%3D%5Cfrac%7B75%7D%7B100%7D%3D0.75)
Upon substituting initial value
and
in above formula, we will get:
![y=4\cdot (1+0.75)^{12}](https://tex.z-dn.net/?f=y%3D4%5Ccdot%20%281%2B0.75%29%5E%7B12%7D)
![y=4\cdot (1.75)^{12}](https://tex.z-dn.net/?f=y%3D4%5Ccdot%20%281.75%29%5E%7B12%7D)
![y=4\cdot 825.0050068497657776](https://tex.z-dn.net/?f=y%3D4%5Ccdot%20825.0050068497657776)
![y=3300.020027](https://tex.z-dn.net/?f=y%3D3300.020027)
![y\approx 3300](https://tex.z-dn.net/?f=y%5Capprox%203300)
Therefore, there will be approximately 3300 cells at the end of 12 hours.