Lesson 15

Evaluate each expression:

1. \(\text-1 \boldcdot 2 \boldcdot 3\)
2. \(\text-1 \boldcdot (\text-2) \boldcdot 3\)
3. \(\text-1 \boldcdot (\text-2) \boldcdot (\text-3)\)

Find the value of each expression.

1. \(\frac14 \boldcdot (\text-12)\)
2. \(\text{-}\frac {1}{3} \boldcdot 39\)
3. \((\text{-}\frac {4}{5}) \boldcdot (\text-75)\)
4. \(\text{-}\frac {2}{5} \boldcdot (\text{-}\frac {3}{4})\)
5. \(\frac83 \boldcdot \text-42\)

Fill in the missing numbers in these equations

1. \((\text-7)\boldcdot {?} = \text-14\)
2. \({?}\boldcdot 3 = \text-15\)
3. \({?}\boldcdot 4 = 32\)
4. \(\text-49 \boldcdot 3 ={?}\)

These three points form a horizontal line: \((\text-3.5, 4)\), \((0, 4)\), and \((6.2, 4)\). Name two additional points that fall on this line.

Order each set of numbers from least to greatest.

1. 4, 8, -2, -6, 0
2. -5, -5.2, 5.5, \(\text-5\frac12\), \(\frac {\text{-}5}{2}\)

Decide whether each table could represent a proportional relationship. If the relationship could be proportional, what would be the constant of proportionality?

1. Annie’s Attic is giving away $5 off coupons.

   original price	sale price
   $15	$10
   $25	$20
   $35	$30

2. Bettie's Boutique is having a 20% off sale.

   original price	sale price
   $15	$12
   $25	$20
   $35	$28