Tony allows his customers to create their own pizza. The customers choose exactly one type of crust, sauce, cheese, and meat for
their pizza. The following table shows the options available to customers. How many different pizza combinations are there?
2 answers:
In cases like these, you simply have to multiply the choices you have for each step.
In fact, you can choose between 4 different crusts. For each of these crusts you can choose 4 different sauces. This means that there are choices at this point. In fact, if we call the crust options 1,2,3,4 and the sauce options A,B,C,D, the 16 possible combinations are
From here, you keep going multiplying the number of options for each step, for a total of
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Hi there!
Ok, so, here are the important facts:
Yearly population growing rate : 0.9%
Population in January 2016 : 1 988 817
Population in January 2019 (3 years later) : x
First off, you need to calculate 0.9% of the population in January 2016 to figure out the number of people it represents :
Saying 0.9% of 1 988 817 is like saying 0.9% times 1 988 817!
To solve this, you can use the cross product method :
(1 988 817 × 0.9) ÷ 100 = ?
1 789 935.3 ÷ 100 = ?
17 899.353 = ?
So 0.9% represents a growing rate of 17 899.353 people (we'll keep the decimals just to be more precise in the end).
Now, since you want to know the expected population in January 2019, 3 years later, you need to multiply 17 899.353 by 3 and then add the result to the population number in 2016 :
(17 899.353 × 3) + 1 988 817 = x
53 698.059 + 1 988 817 = x
2 042 515.059 = x
2 042 515 ≅ x (Since we are talking about a population, which represents a certain amout of people, you need to round the number)
Your answer is : The expected population of Indianapolis in January 2019 would be of 2,042,515 people.
There you go! I really hope this helped, if there's anything just let me know! :)