- Submitted By: sherryk123
- Date Submitted: 01/27/2014 5:55 PM
- Category: Miscellaneous
- Words: 293
- Page: 2
- Views: 152

Student Answer and Work Form Unit 1 Ver. A

Student Name (required): _______________________________

1a. Answer: ___: (0,240,000) ,)(3,204,000)

1b. Answer: -12,000

1b. Key work steps:

y2 - y1 240,000 – 204,000

M= ----------- ------------------------ = 36,000/-3=-12,000

x2 – x1 0 - 3

1c. Answer: y=mx+b

1c. Key work steps

M= -12,000, b= 240,000

Y=12,000x +240,000

1d. Answer: $ 84,000 x = 13

1d. Key work steps: y=-12,000x = 240,000

X=number of years since 2006 to 2010= 13

13 x 12,000=156,000

240,000- 156,000= $84,000

2a. Answer: 2L+2(L-5)=80

2L+2L-10=80

4L=80+10

4L=90

L=90/4

2b. Answer: Length: 22.5 Width: 17.5

2b. Key work steps

L=22.5 length of rectangle 2* 17.5 + 2* 22.5=

W= 22.5-5 35+45=80

W= 17.5 80=80

3a. Answer: Option 1: C= 225 + 10x

Option 2: C=25x

3b. Answer: X (or the number of inches) has to be more than 8.33 inches.

3b. Key work steps

Opt 1< Opt 2

225+10x < 25x

-10x -10x

225 < 15X

------- --------

15 15

8.33 0

8.33 < x

4a. Answer:

x y

-1 10

0 7

2 1

4 -5

4b. Answer: _______________

____________

1a. Key work steps

1b. Answer: _______________

1b. Key work steps

1c. Answer: _______________...