100 PIONTS!!!!! FOR ANSWERING THE TEST UNIT 5 LESSON 9 introductions to functions unit test


1. A zoo is keeping track of the weight of a baby elephant. The table shows the weight for the first, second, third, and fourth weeks. Which graph could represent the data shown in the table?

Week Weight
1 138
2 159
3 175
4 185
(1 point)

2. The table shows the amount of money made by a summer blockbuster in each of the first four weeks of its theater release. Which graph could represent the data shown in the table?

3. In the diagram below, what is the relationship between the number of rectangles and the perimeter of the figure they form?


4. The table shows the relationship between the number of players on a team and the minutes each player gets to play.

Players Minutes
7 35
8 30
9 25
10 20
Is the relationship a function that is increasing or decreasing? Is the relationship a function that is linear or nonlinear?

5. The ordered pairs left parenthesis 1 comma 1 right parenthesis, left parenthesis 2 comma 16 right parenthesis, left parenthesis 3 comma 81 right parenthesis, left parenthesis 4 comma 256 right parenthesis, and left parenthesis 5 comma 625 right parenthesis represent a function. What is a rule that represents this function? (1 point)
y equals 4 superscript x baseline
y equals 4 x
y equals x superscript 4 baseline
y equals x plus 4

6. Soda is on sale for $0.75 a can, and you have a coupon for $0.50 off your total purchase. Write a function rule for the cost of n sodas. How much would 10 sodas cost? (1 point)
C(n) = 0.5n – 0.75; $4.25
C(n) = 0.75n – 0.5; $7.00
C(n) = 0.5n – 0.5; $4.50
C(n) = 0.75n; $7.50

7. Identify the mapping diagram that represents the relation and determine whether the relation is a function.
{(–2, –4), (–1, –4), (3, –4), (6, –4)} (1 point)

8. Identify the mapping diagram that represents the relation and determine whether the relation is a function.

left-brace left-parenthesis negative 8 comma negative 6 right-parenthesis comma left-parenthesis negative 5 comma 2 right-parenthesis comma left-parenthesis negative 8 comma 1 right-parenthesis comma left-parenthesis 7 comma 3 right-parenthesis right-brace (1 point)

9. The function b(n) = 12n represents the number of baseballs b(n) that are needed for n games. How many baseballs are needed for 15 games? (1 point)
27 baseballs
150 baseballs
180 baseballs
200 baseballs

10. Tell whether the sequence is arithmetic. If it is, what is the common difference?

2, 7, 13, 20, . . . (1 point)
yes; 5
yes; 6
yes; 2
no