Which of the following is a function?

a. { (-4,1), (1,8), (-4,-2) }

b. { (-4,1), (1,-8), (-2,-2) }

c. { (-4,1), (1,-8), (1,-2) }

d. none of these

A rectangle has two side lengths of 8 inches and two side lengths of 10 inches. What is the area of the rectangle?

Scientists are studying the temperature on a distant planet. Let y represent the temperature (in degrees Celsius). Let x represent the height above the surface (in kilometers). Suppose that x and y are related by the equation y=41-3x .

What is the decimal expansion of the following fraction? 1/11

Dot got a 75% on her test. She missed 12 questions. how many questions were on the test

What is 30 with 3 over 10 times 12?

0.87 rounded to the nearest whole number?

A group of 7th and 8th graders were asked if they liked playing tennis. liked playing tennis. do not like 7th 0.42 0.58 8th 0.47 0.

Can you answer this (6b+5) - (4b+3)

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An exterminator charges $80 to visit a home and $35 to spray each room. If the total bill was $395, how many rooms were sprayed? Write an algebraic equation that represents this situation. Then solve it.