Algebra 1 Common Core Student Edition, Grade 8-9

7. Snacks purchased, total cost;
   for each additional snack, o
   total cost goes up by 3; 2
   C= 18 + 3s. |
   O

linear

Weight (lb), w

continuous because

can take on any

nonnegative value

Number of

Sn ac k s Pu r c h a se d , s

8. Independent n, dependent f;
   the elevation is 311 uj
   more than 15 times the £
   number of flights climbed; J
   f = 15n + 311. 1

nonlinear

11.

linear

nonlinear

Number of

Fl i g h t s Cl i m b ed , n

14.

16.

1/1^2 ^^8 -

24<

-CU 20

H-O 1 b

12

F 3 8

2 4

uoL

discrete because the

number of trips must be a

whole number

2 4 6 8 10 12 14

Number of Trips, t

continuous because f

can take on any

nonnegative value

y

, \s x\

/ i-

V

\

17. 1/= 243 - 0.2s 18. C= 200 + 45h 19. not a
    function 20. function 21. -4; 6 22. 53; 33


18. {7.2, 1.12, -4.2, -34.6} 24. A(n) = A(n- 1) + 5,

    
    

    4(1) = 3; A(n) = 3 + (n — 1)(5)

    
    

    
    


19. A(n) = A( n - 1) - 3, A{ ) =m 2\
    A(n) = -2 + (n - 1)(—3)


20. A(n) =A(n - 1) + 2.5, A( 1) = 4;
    A(n) = 4 + (n — 1)(2.5) 27. A(n) = A(n - 1) - 7,
    A(1)= 18; A(n) = 18 + (n - 1)(-7)


21. A(n) = 4 + (n - 1)(3) 29. A(n) = 13 + (n - 1)(11)


22. /4(n)= 19 + (n- 1)(-1)
    31.A(n) = 5 + (n-1)(-2)

Ch ap t er 5

Get Ready! p. 291

1. yes 2. no 3. yes 4. y = + 2 5. y = 3x - 2

6. y= -x- 2 7. boat 8. bean plant

....

X m

( 2 ]

( 0 0 ]

( v 1 -2 jy