Evaluate the expression.(-81)3/4
A. not a real number
B. -27
C. 
D. 
Answer: A
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?Which of the following is not true about subtraction of integers: ?
A. ?If a> b, then a - b> 0 B. ?If a< b, and b is positive, then a is negative. C. ?Given that p represents a positive unit and n represents a negative unit, 3 - 5 can be represented as follows: pppppnn subtract ppppp equals nn. D. ?Given that p represents a positive unit and n represents a negative unit, 4 - (-3) can be modeled as follows: pppppppnnn subtract nnn equals positive 7. E. ?Using a number line, one can find the 3 - 4 by starting at 3 and moving 4 to the left to result in –1.
Indicate whether the equation illustrates the additive identity property, multiplicative identity property, additive inverses, or multiplicative inverses.-2 
= 1
A. Multiplicative inverse B. Additive inverse C. Multiplicative identity D. Additive identity
Solve the problem.A building 220 feet tall casts a 70 foot long shadow. If a person looks down from the top of the building, what is the measure of the angle between the end of the shadow and the vertical side of the building (to the nearest degree)? (Assume the person's eyes are level with the top of the building.)
A. 19° B. 71° C. 18° D. 72°
Tell whether a linear model or a quadratic model is appropriate for the data. If a quadratic model is appropriate, then decide also whether the lead coefficient should be positive or negative.The height of a bungee jumper as a function of time.
A. Linear B. Quadratic; leading coefficient positive C. Quadratic; leading coefficient negative