Which of the tables represents a function?

Table A

Input Output

5 3

5 2

4 1

Table B

Input Output

1 2

3 2

5 3

Table C

Input Output

0 0

1 2

1 3

Table D

Input Output

4 2

4 3

4 4

Table A

Table B

Table C

Table D

Abby has a circular walking path by her house. She looked on a map, and saw the diameter of the path was about 300 feet. lf she walks around the path 4 times, about how far (in feet) will she walk?

Laura drove to the mountains last weekend. There was heavy traffic on the way there, and the trip took hours. When Laura drove home, there was no traffic and the trip only took hours.

Two fifths of one less than a number is less than three fifths

It costs a lumberyard $2.05 per cubic foot of lumber. If they sell the lumber back to their customers for $21.

What it 15-7x2+2 squared

If y = 7.2 when x = 10, what is the value of x when y = 20? (y varies inversely as the square of x.) A. 14.4 B. 6 C. 10 D. 20

If sally has 8 dog and lost 2, how many does she have left?

Consider the equation 4+2 (5x-8) = ax+b for what values of a and b would the equation have infinitely many solutions

Find cos a and cot b exactly if a = 15 and b = 11.

2) Sarah is trying to raise $240 for a school trip. She has already raised 25% of the money. How much money does Sarah still need to raise?