To make a spiral design, an art student draws a segment 10 cm in length.
then she repeats the following two steps:
• rotate the paper 90°
• draw another segment that is 80% of the length of the previous one.
a) write an explicit formula to find an, the length of the n segment.

Jessica and martha each have a bag of cookies with unequal quantities. they have 30 cookies total between the two of them. each of them ate 6 cookies from their bag. the product of the number of cookies left in each bag is not more than 80. how many more cookies will jessica have martha? if x represents the number of cookies jessica started with, complete the statements below.the inequality that describes the relationship between the number of cookies each one of them has is x^2 - x +224 > = 0.jessica has at least cookies more than martha.