Sewanhaka High School
Math 8
Per:________________
Name:________________________________
Mrs. Lidowsky, Principal
Mr. Long, Teacher
Date:_____________________
H.W. #38: Ditto
DO-NOW #38: Answer the following questions:
1)
Topic: Functions
Main Idea: More on Representing Relationships
Aim:
RECALL
There are approximately 770 peanuts in a jar of
peanut butter. The total number of peanuts p(j) is a
function of the number of jars of peanut butter j.
Write a function to represent the total number of
peanuts. Then determine the number of peanuts in
seven jars of peanut butter.
A hot air balloon can hold 90,000 cubic feet of air.
It is being inflated at a rate of 6,000 cubic feet per
minute. The total cubic feet of air a(t) is a function
of the time in minutes t. Write a function to
represent the total amount of air. Then determine
the total amount of air in 6 minutes.
Write a function rule for the
following function.
A satellite cable company charges an installation fee
of $50 plus an additional $35.95 per month for
service. Write a function to represent the total cost
of any number of months of service.
NOTES
Refer to the previous question. Make a function table
to find the total cost for 1, 2, 3, 4, and 5 months and
graph the function. Is it linear or nonlinear? Explain.
Drill: Answer the following questions. Show work.
1) A scrapbooking store is selling rubber stamps for $4.95 each. The total sales f(n) is a function of the number of
rubber stamps n sold. Write a function to represent the total sales. Then determine the total sales for 5 stamps.
2) Write a function rule for the following function.
3)
Summary: