Find the largest open intervals where the function is concave upward.f(x) = 2x - 5e-x
A. (-? , 0 )
B. ( -?, ? )
C. ( 0 , ? )
D. None
Answer: D
You might also like to view...
Solve.The Spring City school system has 3983 high school students, 3565 middle school students, and 3735 elementary school students. How many total students are in the Spring City school system?
A. 11,191 B. 11,283 C. 11,338 D. 11,243
Solve the problem using your calculator.Two separate tests are designed to measure a student's ability to solve problems. Several students are randomly selected to take both tests and the results are shown below. Use a graphing calculator to model the data with a linear function that predicts a student's score on Test B as a function of his or her score on Test A.
A. y = 19.4 + 0.930x B. y = -19.4 - 0.930x C. y = 0.930 - 19.4x D. y = -0.930 + 19.4x
Sketch the graph of the equation.x2 + y2 = 81
A. 
B. 
C. 
D. 
Simplify the exponential expression. Write any negative exponents as positive exponents. Assume all variables represent positive real numbers.(4x4y4)1/2
A. 2x4y2 B. 2x2y2 C. x2y2 D. 2x2y