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
Answer: D
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Solve the problem.A stone is dropped from a tower that is 750 feet high. The formula 
describes the stone's height above the ground, h, in feet, t seconds after it was dropped. What is the stone's height 5 seconds after it is released?
A. 350 ft B. 375 ft C. 325 ft D. 360 ft
Solve the problem.
The Montgomerys borrowed $86,000 at 7.50% for 30 years to purchase a house. Find the total interest the Montomerys will pay if they pay the loan on schedule.
A. $142,794.40 B. $135,673.60 C. $130,410.40 D. $119,884.00
The height (in feet) of a certain kind of tree is approximated by 
where t is the age of the tree in years. Estimate the age of a 60-ft tree. Please round the answer to two decimal places.
?
t = __________ years
Fill in the blank(s) with the appropriate word(s).
What is the domain of f(x)? What is its range?f(x) = 
+ 5
A. Domain: (-?, -7) ? (-7, ?); range: (-?, 5) ? (5, ?) B. Domain: (-?, 5) ? (5, ?); range: (-?, 7) ? (7, ?) C. Domain: (-?, 5) ? (5, ?); range: (-?, -7) ? (-7, ?) D. Domain: (-?, 7) ? (7, ?); range: (-?, 5) ? (5, ?)