Indicate whether the function is one-to-one.B = {(1, -2), (2, -2), (3, -8), (4, -3)}
A. Yes
B. No
Answer: B
Mathematics
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Over a certain time period the price of gold doubled every 4 years. What was the yearly growth factor for gold during this period? Round your answer to two decimal places. ?
A. 2.00 B. 1.19 C. 1.69 D. None of the above
Mathematics
Convert the units.768 ounces = 
pounds
A. 192 B. 48 C. 49 D. 76
Mathematics
Find the product.(4x + 9)(4x - 9)
A. 4x2 - 72x - 81 B. 16x2 - 72x - 81 C. 16x2 - 81 D. 16x2+ 72x - 81
Mathematics
Solve the problem.A reflecting telescope contains a mirror shaped like a paraboloid of revolution. If the mirror is 16 inches across at its opening and is 5 feet deep, where will the light be concentrated?
A. 0.3 in. from the vertex B. 0.8 in. from the vertex C. 3.2 in. from the vertex D. 1.6 in. from the vertex
Mathematics