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CPM eBooks ­ CC Algebra
7­24. Each table below represents an exponential function of the form y = abx . Copy and complete each
table on your paper and find the corresponding equation. Homework Help ✎
a. b. 7­25. Brianna is working on her homework. Her assignment is to come up with four representations for
an exponential function of her choosing. She decides it is easiest to start by writing an equation, so she
chooses . Help Brianna create the other three components of the web. 7­25 HW
eTool(Desmos). Homework Help ✎
7­26. Sketch the graphs of y = x2, y = 2x2, and on the same set of axes. Describe the similarities
and differences among the graphs. 7­26 HW eTool (Desmos). Homework Help ✎
7­27. Write an equation or system of equations to solve this problem.
Morgan started the year with $615 in the bank and is saving $25 per week. Kendall started with $975 and
is spending $15 per week. When will they both have the same amount of money in the bank? Homework
Help ✎
7­28. Examine each sequence below. State whether it is arithmetic, geometric, or neither. For the
sequences that are arithmetic, find the formula for t(n). For the sequences that are geometric, find the
sequence generator fort(n). Homework Help ✎
a. 1, 4, 7, 10, 13, … b. 0, 5, 12, 21, 32, …
c. 2, 4, 8, 16, 32, … http://textbooks.cpm.org/bookdb.php?title=cca&name=7.1.2&type=lesson#7­24
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CPM eBooks ­ CC Algebra
d. 5, 12, 19, 26, …
e. x, x + 1, x + 2, x + 3 …
f. 3, 12, 48, 192, …
7­29. Scientists hypothesized that dietary fiber would impact the blood cholesterol level of college
students. They collected data and found r= –0.45 with a scattered residual plot. Interpret the scientists’
findings in context. Homework Help ✎
http://textbooks.cpm.org/bookdb.php?title=cca&name=7.1.2&type=lesson#7­24
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