15. keysha has a coin purse filled with nickels and dimes. she has a total of 180 coins worth $13.80. how
many of each coin does she have?

Agroup of randomly selected members of the foodies food club were asked to pick their favorite type of food. the bar graph below shows the results of the survey. there are 244 members in the foodies.

Delbert keeps track of total of the total number of points he earns on homework assignments, each of which is worth 60 points. at the end of the semester he has 810 points. write an equation for delbert’s average homework score a in terms of the number of assignments n.

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120