Provide an appropriate response.Consider the linear function f(x) = 5x + 20. What is the domain and range of this function? Now, suppose the function represents the relationship between studying time and grades on an exam. The variable x represents the number of hours spent studying and f(x) represents the grade on the exam. Does this change the domain and range? If so, what is the new domain and range and why is it different?
What will be an ideal response?
The domain is all real numbers and the range is the set of all real numbers. In the context of exam grades, the domain and range both become the set of nonnegative real numbers. In this context, times and grades less than zero do not make sense.
You might also like to view...
Use the principle of square roots to solve the equation.-6k2 - 4 = -58
A. 3 B. ±6 C. -29 D. ±3
Solve for x.5x = 
A. {-4}
B. 
C. {4}
D. 
Solve the problem.At Bargain Car Rental, the cost of renting an economy car for one day is $19.95 plus 20 cents per mile. At Best Deal Car Rental, the cost of renting a similar car for one day is $24.95 plus 15 cents per mile. Solve the inequality 24.95 + 0.15x < 19.95 + 0.20x to find the range of miles driven such that Best Deal is a better deal than Bargain.
A. x < 10 mi B. x > 10 mi C. x > 100 mi D. x < 100 mi
Find the exact value of the expression if ? = 60°. Do not use a calculator.f(?) = sin ?Find 8f(?).
A. 4
B. - 
C. 4
D. - 