Time - 30 minutes

30 Questions

1. 2(8-7) 2(7-8)

x y = 2

2. x y

3. 1

4. x 5

On Elm Street there are 6 houses on one side of the street and 4 houses on the other. Each pair of houses on Elm Street is connected by exactly one telephone line.

5. The total number of such 12

lines that connect houses

on opposite sides of Elm

Street

6. The area of triangular The area of triangular

region OPQ region ORS

7. (0.01)(0.07)(70) 0.49

x < y < z

8. z

The three small rectangles have the same dimensions

9.

In a certain city， 20?F was the average (arithmetic mean) of the low temperatures of x?F， 25?F， and 37?F on three consecutive days.

10. x 0

m= 4x 4y， x -y

11. 8

ABCD is a rectangle with diagonals AC and DB.

12 r u v r u v w

n is a positive integer.

13. n 100

f(t) = kt for all t， where k is a constant， and

f(3) =

14. k f(1)

100x

1，000x < 2y

16. Mr. Gifford wishes to put 372 eggs into cartons that can hold 12 eggs each. If he has 50 empty cartons and completely fills as many of them as possible with the 327 eggs， how many of the cartons will remain empty?

(A) 12

(B) 15

(C) 19

(D) 28

(E) 31

17. Which of the following numbers is greatest?

(A) -0.225

(B) -0.0225

(C) -0.323

(D) -0.0325

(E) -0.3205

18. If a certain automobile gets between 20 and 24 miles per gallon of gasoline， inclusive， what would be the maximum amount of gasoline， in gallons， this automobile would consume on a trip of 360 miles?

(A) 20.0

(B) 18.0

(C) 16.4

(D) 16.0

(E) 15.0