Solve the problem.Shelly can cut a lawn with a riding mower in 2 hours less time than it takes William to cut the lawn with a push mower. If they can cut the lawn in 5 hours working together find how long to the nearest tenth of an hour it takes for William to cut the lawn alone.
A. 9.1 hours
B. 11.1 hours
C. 11.2 hours
D. 9.2 hours
Answer: B
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Tell whether the relation is reflexive, symmetric, or transitive on the set of subsets of a nonempty set. Also tell whether the relation is an equivalence relation."Is equivalent to"
A. Reflexive and transitive; not an equivalence relation B. Reflexive and symmetric; equivalence relation C. Reflexive, symmetric and transitive; equivalence relation D. Symmetric and transitive; not an equivalence relation
Suppose that the function with the given graph is not f(x), but f'(x). Find the open intervals where the function is concave upward or concave downward, and find the location of any inflection points.
A. Concave upward on (-?, 0); concave downward on (0, ?); inflection point at 0 B. Concave upward on (-?, -2) and (2, ?); concave downward on (-2, 2); inflection points at -120 and 120 C. Concave upward on (-?, -2) and (2, ?); concave downward on (-2, 2); inflection points at -2 and 2 D. Concave upward on (-2, 2); concave downward on (-?, -2) and (2, ?); inflection points at -2 and 2
Add or subtract as indicated.- 
+ 
A. - 
B. - 
C. 
D. - 
Determine whether the given equation is linear.x = 3
A. Linear B. Not Linear