Normally a Play Station costs $500. But you only want to pay $450. How much discount (in percent) do you want?

Three times the difference of federico’s age, and 4, increased by 7, is greater than 37. what are possible values of federico’s age?

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

Apatient is to be given 35 milligrams of demerol every 4 hours. you have demerol 50 milligrams/milliliter in stock. how many milliliters should be given per dose?