Without solving, determine the character of the solutions of the equation in the complex number system.x2 + 2x - 5 = 0
A. two unequal real solutions
B. two complex solutions that are conjugates of each other
C. a repeated real solution
Answer: A
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Find area of circle. (Use 3.14 for ?)A circle whose radius is 5 in.
A. 31.4 in.2 B. 78.5 in.2 C. 314 in.2 D. 15.7 in.2
Solve the problem.The quadratic function 
models the median, or average, age, y, at which U.S. men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)
A. 1953, 36 years old B. 1958, 23.6 years old C. 1958, 49.6 years old D. 1936, 49.6 years old
Solve the equation.
+ 
= - 
A. 
B. 
C. 
D. 
Solve the problem.How many 4-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 if the first digit cannot be 0? Repeated digits are allowed.
A. 6,561 B. 3,024 C. 6,480 D. 9,000