Courtney bought 7 pounds of candy at store A for $15.50. Chris bought 5 pounds of candy at store B for $90.50 Kelsey bought 8 pounds of candy at store C for $18.25. Which store has the better buy?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

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

Apack of gum would be considered a(n) necessity luxury item small ticket item unaccountable expense