formula

Formulas for knowing the charge per customer, and the daily sales. These are my charges: less than an hour= Php10.00 1 hour= Php15.00 and I also want to add up the daily sales in this project. Pls. Help!

whenever i make a turn. What is it? Could it be the power steering pump?

for Iron, potassium, sodium, vit A, Vit C

i don't live in a state with sales tax so i'm really confuesd. The sales tax in one state is 7%. Write a function rule for finding the total cost of an item with selling price x. Then find the total cost of a CD player with a selling price of $150. f(x) = x – 7; $148.93 f(x ) = 0.07x; $10.50...

looking at data from past days and weeks. Need to make a prediction for next week etc

Cell K6 is $50-$200 cell L6 should be that amount *30%, If Cell K6 is $201 or more cell L6 should be that amount *60%.