Solve.An endangered species of fish has a population that is decreasing exponentially 
The population 10 years ago was 1600. Today, only 800 of the fish are alive. Once the population drops below 100, the situation will be irreversible. When will this happen, according to the model? Round to the nearest year.
A. 31 yr
B. 32 yr
C. 30 yr
D. 29 yr
Answer: C
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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
Find the unit price.3 days at a waterpark costs $489.
A. $148/day B. $163/day C. $173/day D. $188/day
Use the discriminant to determine the number of real roots the equation has.
2x² – 4x + 2 =0 A) One real root (a double root) B) Two distinct real roots C) Three real roots D) None (two imaginary roots)
Simplify the expression.9g + 24 - 5
A. 9g - 19 B. 9g + 19 C. 9g + 29 D. 28g