Name__________________________________________________________Date_________________Period_________
Week 12 Homework 11-7-16
1 Julio measured the amount of water that flows from his shower head during normal use.
He found that his shower head used 21 gallons of water in 3 minutes. If the amount of
water used varies directly with the amount of time spent showering, approximately how
much water would be used during a 21 minute shower?
2 Emilio drives a truck. He puts 15,000 miles on his truck in a two-month period. If Emilio
purchases a brand new truck, how long will it take Emilio to put 300,000 miles on the
truck?
3 Sadie saves $4.50 every week. Her parents started her saving account with $150.00.
Write an equation that represents the balance in Sadie’s savings account if there were not
withdrawals.
Does Sadie’s equation represent a proportional relationship? Why or why not?
4 The table below shows a relationship between x and y. Find the constant of
proportionality.
5 Which equation represents a proportional relationship?
Ay
By
Cy
Dy
=
=
=
=
6x
x+4
2x + 4
5x – 1
6 Identify the rate of change for the following graph (slope).
7 Find the slope and y-intercept of the graph below.
8 Write the number 5,350,000 in scientific notation.
10 Write the number 3.27 × 10−6 in standard
notation.
9 Solve the equation:
15𝑥 − 42 = 24𝑥 + 12
11 A list of numbers is shown below.
2
,
−60%,
−0.65,
3
List the numbers in ascending order.
4
5