Find all numbers a such that the given point is on the circle x2 + y2 = 1.

A. a = ± 
B. a = ± 
C. a = ±
D. a = ± 


Answer: B

Mathematics

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Determine whether or not the graph is a graph of a function of x.

A. Function B. Not a function

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If is a child's rate of growth in pounds per year, which of the following expressions represents the increase in the child's weight (in pounds) between the years 3 and 7?

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Solve the problem.A manufacturer makes three different drinks. Drink 1 contains 10% juice and 90% carbonated water. Drink 2 contains 50% juice and 50% carbonated water. Drink 3 contains 90% juice and 10% carbonated water. The manufacturer currently has available 60 liters of juice and 160 liters of carbonated water. Drink 1 sells for $1 per liter, Drink 2 sells for $2 per liter, and Drink 3 sells for $3.80 per liter. How many liters of each drink should the manufacturer make to maximize revenues?

A. 172.5 liters of Drink 1, 0 liters of Drink 2, 47.5 liters of Drink 3 B. 128.0 liters of Drink 1, 20 liters of Drink 2, 37.5 liters of Drink 3 C. 142.5 liters of Drink 1, 60 liters of Drink 2, 30.0 liters of Drink 3 D. 152.5 liters of Drink 1, 40 liters of Drink 2, 40.0 liters of Drink 3

Mathematics

For the expression,a) determine the number of terms;b) write down each term; andc) write down the coefficient for each.Be sure to simplify the expression before answering.6x2 - x - 9(6x2 - 4x + 6)

A. a) 3 b) -48x2, -5x, 6 c) -48, -5, 6 B. a) 3 b) -48x2, -37x, -54 c) -48, -37, -54 C. a) 3 b) -48x2, 35x, -54 c) -48, 35, -54 D. a) 3 b) -48x2, 3x, -6 c) -48, 3, -6

Mathematics