# PracticeCreate A Formula

#### pre-trip_rapture

Devon owns a house cleaning company and has to give price quotes to potential customers. He figures out his price by assuming a $25 base charge and then adding$8 for each bathroom and $4 for each other room. If he uses P to represent the price, B for bathroom, and R for other rooms, create a formula describing the situation. Break this problem down one sentence at a time leading to the formula requested. Do not solve the problem. #### MarkFL ##### La Villa Strangiato Staff member Administrator Moderator Math Helper Okay, we are told to let $$P$$ represent the price. We need to identify any variables: "B for bathroom, and R for other rooms" These are the things that can vary from job to job, and so $$P$$ will be a function of $$B$$ and $$R$$. "$8 for each bathroom and $4 for each other room" This tells us $$8B$$ and $$4R$$ will constitute the variable portion of the price, and the fixed part is the given base charge. Putting this all together, what do you get? pre-trip_rapture #### pre-trip_rapture ##### Member Okay, we are told to let $$P$$ represent the price. We need to identify any variables: "B for bathroom, and R for other rooms" These are the things that can vary from job to job, and so $$P$$ will be a function of $$B$$ and $$R$$. "$8 for each bathroom and \$4 for each other room"

This tells us $$8B$$ and $$4R$$ will constitute the variable portion of the price, and the fixed part is the given base charge. Putting this all together, what do you get?
P = (8B + 4R) + 25

MarkFL

#### MarkFL

##### La Villa Strangiato
Staff member
Moderator
Math Helper
Yes, I agree. Good work!

#### pre-trip_rapture

##### Member
Yes, I agree. Good work!
You reasoned your way through the problem.