Perform the indicated operation.v = 4i + 2j + 3k and w = 4i - 3j + 5kFind 
- 
.
A. 
B. 3
- 
C. 
- 5
D. 3
Answer: C
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Provide an appropriate response.
= ? (percent)
A. 0.83
%
B. 1.20%
C. 83
%
D. 12%
E. none of the above
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. 1956, 48.8 years old B. 1956, 24 years old C. 1952, 36 years old D. 1936, 48.8 years old
Mr. Smith is 6 ft tall and walks at a constant rate of 2 ft/sec toward a street light that is 10 ft above the ground. At what rate is the length of his shadow changing when he is 6 ft from the base of the pole that supports the light? Enter just an integer (no units).
Fill in the blank(s) with the appropriate word(s).
Simplify and then solve.
= 7 + 20 ÷ 4
A. x = 108 B. x = 48 C. x = 16 D. x = 8