A constant function is one like f(x)=2 so no matter what value of x I put in, the output is 2. If I have f(x)=x, the identity, this is not constant. I put in 3 for example and get out 3, but if I put in 4 I get out 4. f(x)=x^2 is another non constant. I put in a number and the output is the number squared so this is NOT constant.
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I will exceed the speed limit. Giving 10 examples might exceed my patience.
The tip would be 8.88 Divide the bill by 10 - giving 5.92. Divide that figure by 2 - giving 2.96 (this is 5% !) Add the two figures together, and the result is 15% of the bill.
8. Im giving you an easy way. But, it is sort of hard to explain, 8x10=80 the trick is you take away the 1 in 10 and put the 8 were the 1 was
Giving someone directions across city blocks: for example, go three blocks along and two blocks right. That is equivalent to (3, 2) from where you start.
giving