Page 301 - Algebra 1

*15. Multi-Step Stock A and Stock B have both experienced rapid growth on the market (44) over the past several days. The graph shows the growth of both stocks over 9 days.
28 20 12
2468
Number of Days
a. After 9 days, what was the average rate of increase for Stock A?
b. What was the average rate of increase for Stock B?
c. Write Explain which stock was the better buy based on the graphs shown.
16. Atmospheric Science Scientists at Mauna Loa Observatory in Hawaii have measured (44) the levels of carbon dioxide present in the atmosphere for many years. In 1962
the level was measured at 315 parts per million. It had increased to 320 parts per million by 1969. What was the average rate of increase for carbon dioxide between 1962 and 1969 to two decimal places?
17. Geometry A student draws a right triangle on a coordinate plane. What is the slope (44) of the triangle’s hypotenuse?
y
8
6
4
2
x
2
4
6
8
18. Factor the polynomial 5m2n4 + 10m3n completely. (38)
___ 19.Simplifyw2(w- x).
(39)
20.
(35)
21.
(36)
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Saxon Algebra 1
x-3 4x2 j-3w
y
Stock
A
Stock B
x
Membership Dues A local gym charges a monthly fee of $12 plus $4 for each class attended. The equation y = 4x + 12 can be used to calculate the monthly bill. Find the intercepts.
Multi-Step You and a friend are taking a trip. The scale on your map is 1 inch:16 miles.
a. b. c. d.
If the first leg of the trip measures 5 inches on the map, how many miles will you be driving?
If the second leg of the trip measures 17.5 inches on the map, how many miles will you be driving on this leg?
If you find a shorter route for the two legs that totals 20 inches on the map, how many miles shorter will the shorter route be?
Will the shorter route always be the faster route? Explain your reasoning.
Stock Value