Question

Yasmin is training for a marathon, and each week she increases her running distance. During her first 4 weeks of training, her distances were 1, 2, 4, and 8 miles. What is the rule the sequence follows?

Answer 1

She's following this equation:\large d=2^{n-1}where n is the number of weeks.

Answer 2

Add 2 miles to the previous number.

Divide the previous number by 2.

Multiply the previous number by 2.

Subtract 4 miles from the previous number