The first graph is a a function, because every vertical line crosses the line only once.
The second relation is not a function, because you're mapping multiple outputs for the same inputs.
The third relation is not a function, because again you're mapping multiple outputs for the same inputs 1 and 2.
We need to compare the fractions: 4/6 5/6 and 7/8
And find the smallest.
By comparing 4/6 and 5/6 we know that 4/6 is smaller, because since they both have same denominator, the smaller number would be the smaller.
And of course 4/6 can not be bigger than 7/8. 7/8 is a lot bigger.
So 4/6 is the smallest. Therefore Lynn that lives 4/6 mile from the play ground lives the closest from the play ground.
Answer:
C) 
Step-by-step explanation:
Recall the identity 
The answer is B. Draw conclusions
1 ft = 12 inches
6 ft = 72 inches (multiply both sides by 6)
6 ft + 2 inches = 72+2 = 74 inches
6 ft, 2 inches = 74 inches
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1 ft = 12 inches
2 ft = 24 inches
2 ft + 1 in = 24+1 = 25 inches
2 ft, 1 in = 25 inches
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1 ft = 12 inches
3 ft = 36 inches
3 ft + 7 in = 36+7 = 43 inches
3 ft, 7 in = 43 inches
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To rewrite the problem a bit in equivalent form, we have a man who is 74 inches cast a shadow that is 25 inches long. The tree has a shadow of 43 inches. We want to find the height of the tree, which for now we'll call x
(tree height)/(tree shadow) = (person height)/(person shadow)
x/43 = 74/25
25x = 43*74
25x = 3182
x = 3182/25
x = 127.28 inches
The tree is 127.28 inches tall which is the same as 10 ft, 7.28 inches
because 127/12 = 10 remainder 7, then we add on the 0.28 portion
