Answer:
8 hours
Step-by-step explanation:
81 - 17 = 64
64/8 = 8
A: 8 hours
A function assigns the value of each element of one set to the other specific element of another set. The number of hours for which Emily rents the bike is 8.
A function assigns the value of each element of one set to the other specific element of another set.
A function from a set X to a set Y allocates precisely one element of Y to each element of X. The set X is known as the function's domain, while the set Y is known as the function's codomain.
Given that Molly's Bikes rents bikes for $17 plus $8 per hour. Therefore, for x number of hours the function to calculate the total rent can be written as,
Total rent, f(x) = $17 + $8(x)
Now, if Emily paid $81 to rent a bike. The number of hours can be calculated as,
f(x) = $17 + $8(x)
$81 = $17 + $8(x)
$81 - $17 = $8(x)
$64 = $8(x)
x = $64 / 8x
x = 8
Hence, the number of hours for which Emily rents the bike is 8.
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