a music store is offering a coupon promotion on its cds. the regular price for cds is $14. with the coupon, customers are given $4 off the total purchase. write an equation that relates the number of cds "c and the total cost "t.

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

Prove that 16^4-2^13-4^5 is divisible by 11.

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z