Solve. Use the principle of square roots.2z2 + 2 = 340
A. 13
B. ±14
C. 170
D. ±13
Answer: D
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Evaluate the integral.
dt
A. 7(cot-1 t)6+ C
B. 
+ C
C. -7(cot-1 t)8+ C
D. 
+ C
Solve the problem.A yoga studio is being designed in the shape of a trapezoid. The lengths of the two parallel sides are 56 feet and 44 feet. The area of the studio is to be at least 1600 square feet and not more than 2000 square feet. What is the range of possible values for the width of the studio?[Hint: the area of a trapezoid is A = 
w(a + b) where a and b are the lengths of the two parallel sides.]
A. 
B. 
C. 
D. 
Suppose that the average adult in the United States will work x number of days (rounded to the nearest day) to earn enough to pay for all of the household's leisure activities in that year. This number can be calculated by multiplying the average percent of household income spent on leisure activities by 365 (the number of days in a year). The bar graph shows the percent of income spent in various countries of the world. Use the graph to answer the question.
In which country is the highest percent of income spent on leisure activities? What percent is this?
A. Japan; 25.3% B. China; 94.9% C. USA; 29.7% D. USA; 70.3%
A small theater has a seating capacity of 2000. When the ticket price is $20, attendance is 1500. For each $1 decrease in price, attendance increases by 50. The revenue R of the theater as a function of ticket price x is as follows
What ticket price will yield a maximum revenue?
A. $55.00? B. $35.00? C. $25.00? D. $45.00? E. $65.00?