Asample from a population with μ = 40 and σ = 10 has a mean of m = 44. if the sample mean corresponds to a z = 2.00, then how many scores are in the sample?

Arestaurant charges $100 to rent its banquet room for an event. it also charges $15 to serve dinner to each guest. write an equation for the total cost of the banquet room in terms of the number of guests. deine your variables. what is the total cost of the banquet room for 20 guests?

Abook store is having a 30 perscent off sale. diary of the wimpy kid books are now 6.30 dollars each what was the original price of the books

Solve the system of equations. y=3x-1 and y=-2x+9. show work