A 9 in by 9 in dish of casserole serves 9 people. To serve 70 people, we need to calculate how many 12 in by 12 in dishes are needed. To do this, we calculate the ratio of people served to dish size and scale it up to serve 70 people. This determines that 7.77 or 8 dishes of the larger size are needed to serve 70 people.

1. PROBLEM OF THE DAY
If a 9 in by 9 in dish of
casserole serves nine people,
how many 12 in by 12 in dishes
of casserole should we make to
serve 70 people?

2. ANSWERS TO WP 16
2. 18C = 4500 ; 250 cartons
4. The outcomes are equally
likely. The probability of
each is 1/2 18. 2½
6. AB is 1 3/8 in.; CB is 20. ¼
1 3/8 in.; CA is 2 3/4 in. 22. 625
8. a) 20/24 b) 9/24 c) 6/24 24. 7777⁷⁄₉
10. a) 33 1/3% b) 1/4 26. ¼, ⁵⁄₁₆, ³⁄₈
12. a) 2 2/7 b) 5 c) 3 7/9 28. B
14. 1863 30. $1434
16. 77

3. MEASURING ANGLES
WITH A PROTRACTOR
Lesson 17

4. LN17: MEASURING ANGLES WITH A
PROTRACTOR
degrees
protractor
vertex

5. LN17: MEASURING ANGLES WITH A
PROTRACTOR
Using a protractor

6. LN 17: MEASURING ANGLES WITH A
PROTRACTOR
Homework: Page 118 / Written Practice 1-29 odds