Write the radical as a rational expression. Assume that variables are nonnegative real numbers.
A. n2
B. 
C. 
D. n1/2
Answer: D
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Classify the triangle as acute, right, or obtuse and as equilateral, isosceles, or scalene.
A. Acute, equilateral B. Obtuse, scalene C. Obtuse, equilateral D. Right, isosceles
Simplify the expression.
A. 
B. 625
C. 5
D. not a real number
A force of 
newtons stretches a spring 
meter (see figure).
How far will a force of 60 newtons stretch the spring? What force is required to stretch the spring 0.1 meter?
?
A. 
B. 
C. 
D. 
E. 
Solve the problem.In the formula A(t) = A0ekt, A(t) is the amount of radioactive material remaining from an initial amount A0 at a given time t and k is a negative constant determined by the nature of the material. An artifact is discovered at a certain site. If it has 74% of the carbon-14 it originally contained, what is the approximate age of the artifact, rounded to the nearest year? (carbon-14 decays at the rate of 0.0125% annually.)
A. 2409 yr B. 1046 yr C. 5920 yr D. 2080 yr