Find fx(x, y).f(x, y) = y ln (9x + 7y)
A. fx(x, y) = y ln (9x + 7y)
B. fx(x, y) = 
C. fx(x, y) = ln (9x + 7y) + 
D. fx(x, y) = 
Answer: B
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Find the domain and range of the function.f(x) = (x - 2)2 + 2
A. Domain: (-?, ?); range: (-?, 2) B. Domain: (-?, ?); range: [2, ?) C. Domain: (-?, 2); range: (-?, ?) D. Domain: (-2, ?); range: (-?, ?)
Find the value of k that makes f(x) = 3e-kx a probability density function on the interval 
Enter just an integer.
Fill in the blank(s) with the appropriate word(s).
Find the derivative.y = x1/5
A. 
x-1/5
B. 
x-4/5
C. - 
x-6/5
D. 
x6/5
According to Linchevski and Kutscher's (1998) study, which student grouping strategy is LEAST likely to be effective?
a. Placing all ninth-grade students in the same level algebra class. b. Creating three separate levels of ninth-grade algebra and placing students in them on the basis of grades from eighth-grade mathematics (students with low grades go in first section, mid-level grades in another, and high grades in another). c. Placing students in cooperative learning groups while solving problems in ninth-grade algebra classes. d. Having students work in pairs when going over the homework assignment from the previous day.