Y=2.5x+30 - the function where y = the total cost and x = the # of notebooks.
40 = 2.5x + 30 - Plug 40 into y and solve
10= 2.5x
x = 4, the number of notebooks she bought
I think $-57million. I added them
Here's the relevant formula:
1 - r^n
nth partial sum = a* ------------
1 - r
1 - r^25
Here, the 25th partial sum is 177147 *-------------
1 - r
Unfortunately, you haven't yet shared the value of the common ratio. Find that value and substitute it for r in the above expression.
Answer: In two similar geometric figures, the ratio of their corresponding sides is called the scale factor. To find the scale factor, locate two corresponding sides, one on each figure. Write the ratio of one length to the other to find the scale factor from one figure to the other.
Answer:
6.75 times 5 would be 17.1
Step-by-step explanation:
