Determine whether the given relationship defines a function. If so, identify the independent and dependent variable, and why the relationship is a function.The temperature t on a backyard thermometer at 5 pm on a given day x.
A. No
B. Yes; x, t; there is one temperature t on any given day x at 5 pm.
Answer: B
Mathematics
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Use a product-to-sum identity to rewrite the expression.sin(4t) sin(2t)
A. 0.5(sin(6t) + sin(2t)) B. 0.5(cos(2t) - cos(6t)) C. 0.5(cos(6t) + cos(2t)) D. 0.5(sin(6t) - sin(2t))
Mathematics
Solve.On a recent trip, Asha drove 220 miles on 16
gallons of gasoline. Calculate how many miles per gallon she gets in her vehicle.
A. 3547
mpg
B. 13
mpg
C. 440
mpg
D. 
mpg
Mathematics
Solve.A town's population was 121,640. During the last twenty years, the population has increased by 28,372. What is the current population?
A. 151,012 people B. 149,012 people C. 150,012 people D. 150,112 people
Mathematics
Find the sum, if it exists.
A. 
B. 
C. 
D. Does not exist
Mathematics