Use a graphing utility to find the equation of the line of best fit. Round to two decimal places, if necessary.
A. y = 1.17x + 16.4
B. y = 1.17x + 18.9
C. y = 1.03x + 18.9
D. y = 1.03x + 16.4
Answer: A
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Find the indicated cardinal number.Find n(D × B) given that B = {1, 3} and D = {7, 8, 9, 10}.
A.
| 8 |
B. 12
C. 16
D. 7
Solve using the addition and multiplication principles.4 + 3x < -28
A. 
B. 
C. 
D. 
Write an equation for the line described. Give your answer in slope-intercept form.m = -5, through (-5, 6)
A. 5x +y = 19 B. y = 5x - 17 C. y = -5x + 26 D. y = -5x - 19
Use the given information to write an equation. Let x represent the number described in the exercise. Then solve the equation and find the number.When 4 times a number is subtracted from 7 times the number, the result is 21. Find the number.
A. 4x + 7x = 21; 3 B. 4x(7 - x) = 21; -7 C. 7x - 4x = 21; 7 D. 4(x - 7) = 21x; 0.6