Find the largest open interval where the function is changing as requested.Decreasing f(x) = 
A. (-4, ?)
B. (-?, -4)
C. (4, ?)
D. (-?, 4)
Answer: D
Mathematics
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Simplify the expression.9(y + 5) - 3
A. 9y + 18 B. 14y - 3 C. 9y + 42 D. 9y + 2
Mathematics
Use proportions to solve the problem.On a map, the length of a nature-center trail is 
If the scale is 
to 
what is the actual length of the trail?
A. 293.4 km B. 584.8 km C. 292.4 km D. 296.4 km
Mathematics
Solve the problem.Mary finds 10 fish at a pet store that she would like to buy, but she can afford only 4 of them. In how many ways can she make her selection? How many ways can she make her selection if he decides that one of the fish is a must?
A. 151,200; 60,480 B. 5040; 504 C. 2520; 252 D. 210; 84
Mathematics
Find the perimeter.
All segments are of equal length.
A. 120 yd B. 100 yd C. 500 yd D. 60 yd
Mathematics