Solve the system of equations using Cramer's Rule if it is applicable. If Cramer's Rule is not applicable, say so.
A. x = 1, y = 2, z = 8; (1, 2, 8)
B. x = 1, y = -2, z = -8; (1, -2, -8)
C. x = 2, y = 8, z = 2; (2, 8, 2)
D. x = 2, y = 0, z = 8; (2, 0, 8)
Answer: A
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Find the dimension of the object and state whether or not it is a fractal.In measuring the length of the object, when you reduce the length of your ruler by a factor of 3, the number of length elements increases by a factor of 4.
A. The dimension is 0.792 and the object is fractal. B. The dimension is 2.262 and the object is fractal. C. The dimension is 1 and the object is ordinary (non-fractal). D. The dimension is 1.262 and the object is fractal.
Write the x- and y-intercepts of the graph.
A. x-intercept: -1; y-intercept: 1 B. x-intercept: 1; y-intercept: 1 C. x-intercept: -1; y-intercept: -1 D. x-intercept: 1; y-intercept: -1
Solve.John owns a hotdog stand. He has found that his profit is represented by the equation 
with P being profits and x the number of hotdogs sold. How many hotdogs must he sell to earn the most profit?
A. 45 hotdogs B. 31 hotdogs C. 22 hotdogs D. 32 hotdogs
Simplify the radical expression by factoring out the largest perfect nth power. Assume that all variables are positive.
? 
A. 5x4y4
B. 5
C. 5x4y4
D. 25x8y8