55 SO
45
40
35
30
25
(40, 36)
.
Total Cost (in dollars)
On average, Susan downloads 60 songs per month. An
online music vendor sells package prices for songs that
Online Music Purchases
can be downloaded onto personal digital devices. The
graph below shows the package prices for the most
popular promotions. Susan wants to know if she
should buy her music from this company or pay a flat
(20,18)
fee of $58.00 per month offered by another company.
20
15
Which is the better buy?
Solo)
이 ·
a. Find the constant of proportionality for this
situation.
Number of Songs Purchased
b. Write an equation to represent the relationship.
C. Use your equation to find the answer to Susan's question above. Justify your answer with mathematical
evidence and a written explanation.
(12, 10.8
.
10
15,4,5)
0
40
45
SO
55
35
30
15
25
S
10
20
0
S.33
Representing Proportional Relationships with Equations
Lesson 8:
EUREKA
MATH
2016 Great Minds. eureka-math. org

What is f(3) for the quadratic function f(x)= 2x^2+ + x - 12

Acompany is testing in comparing to lightbulb designs the box plot shows the number of hours that each lightbulb design last before burning out which statement is best supported by the information of the plot

The minimum wage in washington has been increasing over the last ten years. years 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 washington state minimum wage $6.50 $6.72 $6.90 $7.01 $7.16 $7.35 $7.63 $7.93 $8.07 $8.55 $8.55 a) find the linear regression equation for the minimum wage in washington using this data ( x  0 in 2000). round to the thousandths. b) what is the slope? specifically, what does the slope represent in the real world context? c) what is the y-intercept? specifically, what does the y-intercept represent in the real world context? d) write your equation as a function of x. e) if you do not earn a college degree and you are earning minimum wage in 2020, what do you predict you will be earning per hour with the linear regression equation? f) if the trend continues, when will the minimum wage be $15 an hour? 3. why are your answers to #1d and #2a above different? which do you think is more accurate (#1 or #2) and why