Walter takes 950 milligrams of an antibiotic. Every hour, his body breaks down 25% of the drug. How much will be left after 4 hours?

What is the vertical asymptotes of the function f(x)=x-2/x*2-3x-4

Cora bought a package of erasers. there are 4 pink erasers and 12 blue erasers. what is the ratio of pink erasers to blue erasers?

Aculinary club earns $1360 from a dinner service. they sold 45 adult meals and 80 student meals. an adult meal costs twice as much as a student meal. what is the cost of an adult meal?