Find the equation of the least squares line.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. Number of hours spent in lab (x) Grade (percent)(y) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 1.86 + 88.6x
B. y = 88.6 - 1.86x
C. y = 44.3 + 0.930x
D. y = 0.930 + 44.3x
Answer: B
Mathematics
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Find the sum of the series.
A. 
B. 
C. 
D. 
Mathematics
Locate and classify all critical points for the given function.f(x,y) = x2 + x + y2 - y - 2
A. Minimum of - 
at 
B. Minimum of - 
at 
C. Maximum of - 
at 
D. Maximum of - 
at 
Mathematics
Convert the units using two or three unit fractions.8 gal = 
c
A. 16 B. 32 C. 128 D. 64
Mathematics
Use the verbal description to write a formula for f(x). Then evaluate the function as indicated.Multiply the input by 3 to obtain the output. Find f(-4).
A. f(x) = -3x; 7 B. f(x) = 3x; -12 C. f(x) = 3x; -1 D. f(x) = -3x; 12
Mathematics