#### You've reached the end of your free preview.

Want to read all 3 pages?

**Unformatted text preview: **Include ALL Pictures of the Calculator Screen Showing Your Work Step By Step. 3) f(x) = x 2 + 8x - 10 zeros are x = - 9.099 , 1.099 Solve the problem. 4) Assume that a person's threshold weight W, defined as the weight above which the risk of death rises dramatically, is given by W(h) = ( h 12.3 ) 3 , where W is in pounds and h is the person's height in inches. Find the threshold weight for a person who is 6 ft 4 in. tall. Round your answer to the nearest pound. (67/12.3)^3 (5.44)^3 160.98 Solve. 5) Suppose that $4000 is invested at an interest rate of 5.8% per year, compounded continuously. What is the balance after 3 years? 4000 x 5.8%=232 232 x 3=696 696+4000 4696 6) A cruise boat travels 24 miles downstream in 3 hours and returns to its starting point upstream in 6 hours. Find the speed of the stream. b+c = 8 mph b-c = 4 mph--------------Add the two equations to solve for "b": 2b = 12 b = 6 mph ( boat speed in still water ) Substitute to solve for "c": 6 + c = 8 c = 2 mph (current speed...

View
Full Document

- Fall '19
- Mary Revels