Meena finds some nickels and quarters under the couch cushions. How much money (in cents) does she have if she has 8 nickels and 6 quarters? How much money (in cents) does she have if she has n nickels and q quarters?​

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g