What is the value of this expression 1/ 5^−5

Martha needs 22.25 strawberries for every 5 smoothies she makes. complete the table to see how many strawberries she would need to make 10 smoothies and 20 smoothies.

Use sigma notation to represent the following series for 9 terms.

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3