Solve the problem.The velocity v of an object that falls through a distance h is given by 
where g is the acceleration due to gravity. Two objects are dropped from heights that differ by 5.0 m such that the sum of their velocities when they strike the ground is 
Find the heights from which they are dropped if 
A. 15.1m; 20.1m
B. 1.3m; 6.3m
C. 30.1m; 35.1m
D. 20.1m; 25.1m
Answer: A
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The concentration C, in milligrams per deciliter, of a drug in the bloodstream t hours after an injection is given by
.
?
A: Make a graph of C versus t over the first 10 hours since the injection.B: The drug is effective as long as the concentration is 50 milligrams per deciliter or higher. Add to your graph the horizontal line 
.C: During what time period is the drug effective? Round your answer to two decimal places.
What will be an ideal response?
Solve the problem.Find an equation for the level curve of the function f(x, y) = 
dt that passes through the point 
.
A. y2 - x2 = 40 B. y2 - x2 = -32 C. y2 - x2 = 32 D. y2 + x2 = 40
Solve the problem. Unless stated otherwise, assume a commission of $5 per bond.Joe Simpson bought 36 Woodward Corp. (WDW) bonds maturing 2010. According to a bond table, the last price is 
and the coupon rate is 10.250. Find the effective interest rate using total cost including commissions.
A. 11.9% B. 7.0% C. 6.5% D. 11.7%
Express the following in interval notation.{x|x > -10}
A. (-?, -10] B. (-?, -10) C. (-10, ?) D. [-10, ?)