Which inequalities would have an open circle when graphed? Check all that apply. t Less-than-or-equal-to 25 -2.5 Less-than-or-equal-to m x > 5.4 One-half less-than x x > 0

Aclassmate thinks that solving a system by graphing gives an exact answer when the lines appear to cross at a grid point, but only an approximate answer when they don't. explain why this isn't true.

Charlie tosses five coins.what is the probability that all five coins will land tails up.

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?