an adult blinks about 450 times in 30 minuets. a twelve year old blinks about 150 times in 15 minuets. how many more times does
1 answer:
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Answer:
A
Step-by-step explanation:
We are given two functions:
And we want to find:
Thus:
We can factor the denominator of the first term:
In order to add the two terms, we must have a common denominator. To achieve this, we can multiply to second term by (x - 4). Therefore:
Multiply:
Combine:
Simplify:
We can expand the denominator:
Therefore, our answer is A.