Determine whether or not the function is one-to-one.f(x) = x2 + 1
A. Yes
B. No
Answer: B
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Find the perimeter of the shape made up of rectangles and squares.
A. 126 yd B. 123 yd C. 128 yd D. 111 yd
Solve the problem.Suppose a new business makes a profit of $4000 in its first year, and its profit increases by 18% in each succeeding year. How much total profit did it earn in its first 6 years? Round your answer to the nearest cent.
A. $28,616.84 B. $48,566.09 C. $38,731.81 D. $37,767.87
Find the x-intercepts of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = -x2(x + 6)(x2 - 1)
A. 0, touches the x-axis and turns around; 6, crosses the x-axis; -1, touches the x-axis and turns around; 1, touches the x-axis and turns around B. 0, crosses the x-axis; -6, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis C. 0, touches the x-axis and turns around; -6, crosses the x-axis; -1, crosses the x-axis; 1, crosses the x-axis D. 0, touches the x-axis and turns around; -6, crosses the x-axis; 1, touches the x-axis and turns around
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. An insurance company is willing to insure the concert for $150,000 against rain for a premium of $30,000. If he buys this policy, what are his expected earnings from the concert?
A. $180,000 B. $300,000 C. $270,000 D. $239,400