Solve the problem.In a survey about the number of siblings of college students, the following probability table was constructed: 
What is the probability that a student has less than 2 siblings?
A. 0.75
B. 0.19
C. 0.25
D. 0.56
Answer: D
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A wheel of diameter 6 m travels a distance of 18.26 m. Find the angle ? in radians, to three significant digits, that the wheel turns.
A. 6.09 rad B. 8.09 rad C. 19.6 rad D. 3.04 rad E. 12.2 rad
Work the application. Write a legend and an equation. Solve the equation and answer in a complete sentence.A community garden contains 25 rectangular plots each measuring 5 yards by 9 yards. What is the total area available for gardening?
A. Let a = the total area available for gardening. a = 25 ? (5 ? 9) The total area available for gardening is 700 square yards. B. Let a = the total area available for gardening. 5 ? 9 = a The total area available for gardening is 45 square yards. C. Let a = the total area available for gardening. 25 ? (5 ? 9)= a The total area available for gardening is 1125 square yards. D. Let a = the total area available for gardening. 25 ? (5 ? 9)+ 25 = a The total area available for gardening is 1150 square yards.
Rewrite the equation in a rotated x'y'-system without an x'y' term. Express the equation involving x' and y' in the standard form of a conic section.31x2 + 10
xy + 21y2 -144 = 0
A. 
+ 
= 1
B. y'2 = -4
x'
C. 
+ 
= 1
D. x'2 = -4
y'
Rewrite the equation of the circle 
in standard form.
A. 
B. 
C. 
D. 
E. None of these