What is the domain of f(x)? O {x|1<5}
O {x|1sx s5}
O {yl-4 sy< 1}
O {y|-4sy s 1}

Ametalworker has a metal alloy that is 30? % copper and another alloy that is 55? % copper. how many kilograms of each alloy should the metalworker combine to create 90 kg of a 50? % copper? alloy?

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

The total cost of anja’s trip to the dentist was $628.35. she paid a flat fee of $89.95 which included the checkup and cleaning and then had 4 cavities filled, each of which cost the same amount. which shows the correct equation and value of x, the cost of each cavity filling?