You are multiplying the weight lost each week and the number of weeks elapsed. This means that the result is the total weight that Evie has lost.
The formula for exponential growth is y=a(1+r)
![^{x}](https://tex.z-dn.net/?f=%20%5E%7Bx%7D%20)
. Where a is the initial value when time is 0 (100 in this case). r is the growth rate, we can see that the growth is 10%. And x is how much time has passed, we want to find out how many trucks after 9 years.
So we would plug the values in to get y=100(1+.1)
![^{9}](https://tex.z-dn.net/?f=%20%5E%7B9%7D%20)
. Solving this gives us 235.79, so we would round up to 236, and our answer would be 236 trucks registered in the city in year 9.
Edit: The x and the 9 are exponents, the formatting made them look a bit weird.
Answer:
Step-by-step explanation:
Use the formula to find the z-score, then go to the table that will give you the probability that the value is less than this z-score.
![z=\frac{53-50}{3}=1](https://tex.z-dn.net/?f=z%3D%5Cfrac%7B53-50%7D%7B3%7D%3D1)
The probability that the value lies to the left of 1 on a standard bell curve is 84.1345%, or 84%, the third choice down.
Let's say 6 and 12. 6 can go into 12 twice, making it a factor, and since it's half of 12, it's the GCF.
9(7k-4)-2(7k-12) so first separate these two parts of it ok. 9(7k-4) the - and 2(7k-12) so first let’s do 9(7k-4) multiply 9*7 to get 63k and 9*4 to get 36. So now u have 63k-36. Let’s do the 9(7k-12) now. Same thing. 2^7=14 then 2*12 = 24 which leaves u at 108. So now if u put i together it’s (63k-36)-(14k-24) soooo 63k-14k= 49k and 36-24 = 12 so ur answer is 49k-12 !!! Hope that helps man