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: _______________...