What is the solution of
1 answer:
Answer:
Step-by-step explanation:
Firstly, we know that the solution cannot contain as when x=3, the equation is undefined. This cuts the options in half
When we plug in a value that is less than 3, we always get a value less than 1. This means that when added to 3, we will always get a value less than 4.
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The <em><u>correct answer</u></em> is:
At least 7 times.
Explanation:
Since 10% of the water in the jug is removed each time, this means that 100-10=90% of the water remains.
After two times, we would have 0.9(0.9) = 0.81 = 81% of the water; each time she pours, the number of times 0.9 is multiplied by itself changes. This makes this an exponential inequality (it is not an equation, as we want "less than half of the water"):
To solve this, we will use logarithms: