3 * 7 = 21, so

Then

and you can rationalize the denominator to write this as

Answer:
80 cookies
Step-by-step explanation:
To find the number of oatmeal cookies sold you would divide 72 by 9.
72 / 9 = 8
This means that 8 oatmeal cookies were sold at the bakery sale. The question wants you to find the combined amount of raisin and oatmeal cookies sold, so add 72 and 8 together.
72 + 8 = 80
80 raisin and oatmeal cookies were sold.
Answer:
7%
Step-by-step explanation:
Step one:
given data
The original cost of Sam’s investment is $10,000
Sam calculated his real return to be $10,700
Required:
the interest made from the investment is
10700-10000= $700
Step two:
The ROI is a percentage that tells us the interest made
interest/investment*100
=700/10000*100
=0.07*100
= 7%
The ROI is 7%
She gave him 28 seashells