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Concept explainers
Application Exercises
The graphs show the percentage of high school seniors who had ever used alcohol or marijuana.
The data can be described by the following mathematical models:
Using this information to solve Exercises 55-56.
a. Use the appropriate line graph to estimate the percentage of seniors who used alcohol in 2014.
b. Use the appropriate formula to determine the percentage of seniors who used alcohol in 2014. How does this compare with your estimate in part (a)?
c. Use the appropriate line graph to estimate the percentage of seniors who used marijuana in 2014.
d. Use the appropriate formula to determine the percentage of seniors who used marijuana in 2014. How does this compare with your estimate in part (c)?
e. For the period from 1990 through 2014, in which year was alcohol use by seniors at a maximum? Estimate the percentage of seniors who used marijuana in that year.
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Chapter 1 Solutions
MyLab Math with Pearson eText -- Standalone Access Card -- for Precalculus (6th Edition)
- A house was valued at $95,000 in the year 1988. The value appreciated to $170,000 by the year 2007. A) If the value is growing exponentially, what was the annual growth rate between 1988 and 2007? Round the growth rate to 4 decimal places. r = B) What is the correct answer to part A written in percentage form? r = 3 %.arrow_forwardB G R + K Match each equation with a graph above - 3(0.9)* 1 a. green (G) 3(1.5)* b. black (K) 3(0.73)* c. blue (B) d. red (R) I ✪ 4(1.21)* - 3(1.21)* e. orange (O)arrow_forwardSuppose the planet of Tattooine currently has a population of 6500 people and an annual growth rate of 0.35%. Use this information for all the problems below.arrow_forward
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- Cable AB is 103 ft long and the tension in the cable is 3900 lb. 56 ft D y A B 20° 50° x C Identify the x, y, and z components of the force exerted by the cable on the anchor B. 1 F. FI 3 Fy 2 Match each of the options above to the items below. 2,120 lb 1,120 lb -3,076 lbarrow_forwardIn the given figure, P = 51 lb. 65° 25° 35° 75 lb P B Determine the required tension in cable AC, knowing that the resultant of the three forces exerted at point C of boom BC must be directed along BC. The required tension in cable AC is lb.arrow_forwardhelp on this question about Laplace transformation?arrow_forward
- Help me expand this fraction below.arrow_forwarddetermine the final and initial value of the expression below: Helparrow_forwardThe boom OA carries a load P and is supported by two cables as shown. Knowing that the tension in cable AB is 190 lb and that the resultant of the load P and of the forces exerted at A by the two cables must be directed along OA, determine the tension in cable AC. 29 in. B 24 in. 36 in. C 25 in. 48 in.. Aarrow_forward
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