Decide whether the statement is always true, sometimes true, or never true.The difference between two numbers of opposite sign is negative.
A. Always true
B. Sometimes true
C. Never true
Answer: B
Mathematics
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Solve the problem.A ramp leads up to a warehouse loft. The path up the ramp is 21 ft long. The base of the ramp is 16 ft long. How high is the loft? Round your answer to hundredths. 
A. 6.80 ft B. 92.50 ft C. 18.50 ft D. 13.60 ft
Mathematics
State whether the function is linear or quadratic.f(x) = 7
A. Linear B. Quadratic
Mathematics
Factor completely, or state that the polynomial is prime.2x2 + 6x + 4
A. 2(x + 2)(x + 1) B. (2x + 4)(x + 1) C. 2(x2 + 3x + 2) D. (x + 2)(2x + 2)
Mathematics
Identify the intervals where the function is changing as requested.Decreasing
A. (2, 1) B. (2, -1) C. (-1, 2) D. (1, 2)
Mathematics