Simplify the expression. Assume that all variables are positive when they appear.
A. 3xy
B. 5xy
C. 5xy
D. 5xy
Answer: B
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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. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
State whether the parabola opens upward or downward.f(x) = -x2 - 17
A. Downward B. Upward
Solve the equation using the quadratic formula. Check your solution.
A. 
B. 
C. 
D. 
E. 
Solve.You are taking a multiple-choice test that has 11 questions. Each of the questions has 5 choices, with one correct choice per question. If you select one of these options per question and leave nothing blank, in how many ways can you answer the questions?
A. 55 B. 16 C. 48,828,125 D. 161,051