Find the sample size that produces the margin of error of 15%

a. 45
b. 15
c. 300
d. 2890

What is the pattern in the values as the exponents increase?

Explain why the factor 1.5 is broke. into two numbers in the model.

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?