Express the polynomial in descending order. If the polynomial is already in descending order, so state.
x + 
x3 - 
x - 
x4
A. already in descending order
B. - 
x4 + 
x3 + 
x
C. - 
x + 
x3 - 
x4
D. - 
x4 + 
x3 - 
x
Answer: D
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The table shown was generated by a graphics calculator. The expression y1 represents f(x).
If f(x) = -7, then x = ?
A. -2 B. 2 C. 0 D. Cannot be determined
A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 100 hours, and distribution approximated by a normal curve. Find the percentage of bulbs that can be expected to last the period of time. Round to the nearest hundredth, if necessary.Less than 460 hours
A. 48.40% B. 51.60% C. 34.46% D. 65.54%
Solve.Find the area and perimeter of the figure:
A. area: 
ft2; perimeter: 2
ft
B. area: 
in2; perimeter: 2
in
C. area: 
ft2; perimeter: 1
ft
D. area: 
ft2; perimeter: 2
ft
Write the expression in lowest terms.
A. 
B. 3
C. 
D. 1