Classify the statement as true or false. Consult the following list as needed. N = the set of natural numbers W = the set of whole numbers Z = the set of integers Q = the set of rational numbers H = the set of irrational numbers R = the set of real numbers636.7 ? Z
A. True
B. False
Answer: B
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Solve.A rectangular park is 30 km long and 12 km wide. How long is a pedestrian route that runs diagonally across the park?
A. 84 km
B. 6
km
C. 12
km
D. 2088 km
Decide whether the expression has been simplified correctly.x4 ? x2 = x6
A. Simplified correctly B. Not simplified correctly
Recognize the elementary row operation used and determine the missing entry.
? 
A. 4
B. - 
C. -4
D. 
Solve the problem.A driver wants to gauge the fuel efficiency of her vehicle. She notices that traveling at an average speed of 35 mph results in a rating of 27 mpg, whereas at an average speed of 40 mph, her car rates 12 mpg. Assume that the relationship between average speed (mph) and gas mileage (mpg) is linear. (a) Find an equation to model the gas mileage, y, for an average speed of x mph. Write your answer in slope-intercept form. (b) Use your equation from part (a) to estimate the gas mileage, rounded to the nearest whole number, the driver would get if her average speed was 25 mph.
A. (a) y = - 3x + 78; (b) 3 mpg
B. (a) y = - 3x + 132; (b) 207 mpg
C. (a) y = 
x + 78; (b) 86 mpg
D. (a) y = 
x + 132; (b) 140 mpg