Solve the problem.A man 6 ft tall walks at a rate of 7 ft/s away from a lamppost that is 24 ft high. At what rate is the length of his shadow changing when he is 40 ft away from the lamppost?
A. 
ft/s
B. 
ft/s
C. 
ft/s
D. 
ft/s
Answer: D
Mathematics
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Graph the quadratic function using its properties. Based on the graph determine the domain and range of the quadratic function.f(x) = x2 + 6x + 8
A. domain: {x|-? < x < ?}
range: {y|y ? -1}
B. domain: {x|-? < x < ?}
range: {y|y ? 1}
C. domain: {x|-? < x < ?}
range: {y|y ? 1}
D. domain: {x|-? < x < ?}
range: {y|y ? -1}
Mathematics
Solve the exponential equation. Use a calculator to obtain a decimal approximation, correct to two decimal places, for the solution.
x = 18
A. {-4.50} B. {2.08} C. {-2.08} D. {-0.48}
Mathematics
Fill in the blanks to complete the sentence.The fraction 
represents 
of the 
equal parts into which a whole is divided.
A. 47, 11
B. 11, 47
C. 
, 11
D. 
, 47
Mathematics
Find m?MNO in the isosceles trapezoid below.
Mathematics