Simplify the expression. Assume that all variables are positive when they appear.(9
)(10
)
A. 90
B. 2250
C. 450
D. 450
Answer: C
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Suppose that the functions f and g and their derivatives with respect to x have the following values at the given values of x. Find the derivative with respect to x of the given combination at the given value of x.
g(x + f(x)), x = 3
A. -32 B. -4 C. -36 D. 27
Solve the problem using your calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use linear regression to find a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 1.86 + 88.6x B. y = 0.930 + 44.3x C. y = 44.3 + 0.930x D. y = 88.6 - 1.86x
Add.(7 + 3n6 - 2n3) + (9n6 + 9n3 - 5)
A. 21n9 B. 16n6 + 12n3 - 7 C. 12 + 7n6 + 2n3 D. 12n6 + 7n3 + 2
Use elimination to solve the system of equations.8x - 5y = 285x - 2y = 22
A. (6, 5) B. (6, 4) C. Inconsistent; no solutions D. (5, 5)