Using parentheses and any order of operations, and the numbers 40, 50, 4, 8, 9, 3 (in that order) , i need to get a total of -394. how can i do it?

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

45 was divided by a power of ten to get 4.5. what power of ten was it divided by? people 4.5

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?