3.7 Homework

3 |v-3| = 9

• v = 0, -6
• v = 3, -3
• v = 0, 6

2|d+4|=8

• d = 0, 8
• d =  4, -4
• d = 0, -8

|4f + 1| - 2 = 5

• f = 1.5, -2
• f = 5, -5
• f = 0, 1.5

|3t - 2| + 6 = 2

• t = -2, 3.33333
• No solution
• t = 0, -2

4|2y - 3| - 1 = 11

• y = 3, 0
• y = 3, -3
• y = -3, 0

3|x + 2| + 4 =13

• x = 1, 9
• No Solution
• x = 1, -5

-4 |k| = 12

• k = 3, -3
• No Solution
• k = 0, 3

|-3n| - 2 = 4

• n = 2, -2
• n = 2, 0
• No Solution

-8<2(x+4) or -3x+4>x-4

• No solutions
• x<-8 or x<2
•  x>-8 or x<2
• x<-8 and x<2

Tags

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

Your taxi fare is $2.50 per mile, plus a $5 fee.  You cannot exceed $20.  Which inequality models this scenario?

• 5x + 2.50 ≤ 20
• 2.50x + 5 < 20
• 2.50x + 5 ≤ 20
• 7.50x < 20