Apenny, nickel, and dime are all flipped once. what is the probability that at least one coin comes up heads? a. 1/3 b. 3/8 c. 1 d. 7/8

Atorch and a battery cost 2.50 altogether.the torch costs 1.50 more than the battery.what fraction of the total price is the torch? give your answer in its simplest form.

Suppose y varies directly with x. write a direct variation equation that relates x and y. then find the value of y when x=12 y=7 when x=3

Solve the equation.then check your solution 8=1.88+a