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.

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.