Add the numbers using the number line.-9 + 0 
A. 0
B. -90
C. 9
D. -9
Answer: D
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The surface area, in square inches, of a balloon of radius r inches is given by
?
?
A. Use functional notation to indicate the surface area, in cubic inches, of a balloon of radius 5.00 inches.B. Calculate the value you found in part A.C. If the radius of a balloon is doubled from 4.00 inches to 8.00 inches, does the surface area double?D. By what factor does the surface area of the balloon increase if the radius is increased from 4.00 inches to 8.00 inches?
What will be an ideal response?
Solve the problem. Round your answer, if appropriate.Boyle's law states that if the temperature of a gas remains constant, then PV = c, where 
, 
, and c is a constant. Given a quantity of gas at constant temperature, if V is decreasing at a rate of 15 in. 3/sec, at what rate is P increasing when P = 70 lb/in.2 and V = 50 in.3? (Do not round your answer.)
A. 
lb/in.2 per sec
B. 21 lb/in.2 per sec
C. 
lb/in.2 per sec
D. 
lb/in.2 per sec
Answer the questionWhat type of variation is suggested by the graph?
A. y varies directly as the square of x B. y varies inversely as x C. y varies inversely as the square of x D. y varies directly as x
Solve for the unknown in the equation.4N - 8 = 24
A. N = 28 B. N = 8 C. N = 14 D. N = 32