Find the LCM of the given numbers.60, 40, 70
A. 280
B. 120
C. 420
D. 840
Answer: D
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Solve the special system by elimination. If the system is dependent, write the solution using set-builder notation with the common line expressed in slope-intercept form.
A. {(x, y)|y = -7x + 9}
B. 
C. (0, 0)
D. ?
Add or subtract as indicated. Simplify if necessary.
- 
A. 
B. 
C. 
D. 
Use properties of fractions to simplify the expressions. The word per means division and may be replaced by a fraction bar. Round your answer to two decimal places.
A) 2.5 gal/hr
B) 2.5 hr/gal
C) 2 hr/gal
D) 5 gal
E) 3.5 gal/hr
Use the graph to determine the function's domain and range.
A. domain: [4, ?) range: [-5, ?) B. domain: (-?, ?) range: [-5, ?) C. domain: (-?, 4) or (4, ?) range: (-?, -5) or (-5, ?) D. domain: (-?, ?) range: (-?, ?)