If f(x)=3x-4 and g(x)=x2 find the value of f(3)-g(2).
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Let x represent number of redwood trees and y represent number of spruce trees.
We have been given that a park ranger bought 12 trees. We can represent this information in an equation as:
We are also told that redwood trees cost $24 each, so cost of x redwood trees would be .
Each spruce tree costs $16, so cost of y spruce trees would be .
Since the park ranger spent $208 on trees, so we can represent this information in an equation as:
Upon substituting equation (1) in equation (2), we will get:
Therefore, the park ranger bought 2 redwood trees.
Upon substituting in equation (1), we will get:
Therefore, the park ranger bought 10 spruce trees.
We have to multiply 54 * 23, and check where the mistake is.
We start by multiplying 54 by 3, and it gives us 162
Then, we multiply 54 by 20, and it gives us 1080.
Then, we have to add these two results:
The mistake is where 6 is added to 8. It does not give 13, but 14.
The 1 of the 10 goes adding above the 1 in 162.
The result is 1,242.
