Find the domain and range of the function.f(x) = -10x2 - 200x - 1002
A. Domain: (-?, ?); Range: (-?, -2]
B. Domain: (-?, -2]; Range: [0, ?)
C. Domain: (-?, -2] ; Range: [10, ?)
D. Domain: (-?, ?); Range: (-?, 10]
Answer: A
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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
Determine if the following is a linear equation in one variable. If not, state why.4x + 6 = 2x + 16
A. It is a linear equation in one variable. B. It is not a linear equation in one variable because 4x has an exponent other than 1. C. It is not a linear equation in one variable because it is not an equation. D. It is not a linear equation in one variable because it has more than one variable.
Solve the problem.Ron throws a ball straight up with an initial velocity of 40 feet per second from a height of 7 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball?
A. x = 0; y = -16t2 + 40t + 7; 5.328 sec; 1.25 sec; 25 feet B. x = 0; y = -16t2 + 40t + 7; 4.621 sec; 1.25 sec; 177.892 feet C. x = 0; y = -16t2 + 40t + 7; 2.311 sec; 1.25 sec; 6.988 feet D. x = 0; y = -16t2 + 40t + 7; 2.664 sec; 1.25 sec; 32 feet
Evaluate the expression for the given value or values.- 
, for y = -45, z = 5
A. -5 B. 9 C. 5 D. -9