Elmer has a collection of 30 fossils. of these, 21% percent are fossilized snail shells. how many fossilized snail shells does elmer have?

What is the answer to |-2x-5|-|-4+8| and x=7

When only separate discreet points are graphed it is called?

Charlie is at an amusement park that has 18 different rides. each ride costs $1.75. the function c(r) = 1.75r represents the total amount of money that charlie will spend if he goes on r rides, but he never goes on the same one more than once. what domain and range are reasonable for the function?