To find what y is you have to do y1-y2/x1 - x2
Hope this helped
Let's say that the value invested in the account with a rate of 8% is "x", then the amount invested in the account with a rate of 12% is:
To calculate the total interest we need to calculate the interest of each individual account and sum them:
The total interest is the sum of the two expressions above:
The value invested in the account with 8% interest is 830, the one invested in the account with 12% interest is 1280.
12000 - 2900 = 9100
9100 / 36 = 252.77.....about 253 per month
Answer: Mark's sample is more representative.
Step-by-step explanation: