Kostas gets a four-year bank loan to buy a new car that is priced at $20,987. After four years, Kostas will have paid the bank a total of $22,960. What interest rate did the bank give him if the interest was compounded monthly ?

Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?