There are a lot but when I think of it I think -14+0
It’ equals h=/y8x ok that is simple
<h3>
Answer: D) The y intercept is (0,1)</h3>
This can be confirmed by plugging x = 0 into the function to find that...
y = (1/2)^x
y = (1/2)^0
y = 1
Recall that any nonzero value to the 0th power leads to 1. So we can say x^0 = 1 as long as x is not zero.
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Extra info (optional section):
- We can rule out choice A because negative x values work in the domain. For instance, if x = -1, then it leads to y = (1/2)^x = (1/2)^(-1) = 2. The negative exponent will apply the reciprocal operation to the base fraction.
- Choice B can also be ruled out because the range is y > 0. Or you could note that it is possible to get positive y values smaller than 1/2. Try x = 2 and you'll see it leads to y = 1/4 which is not greater than 1/2.
- Choice C is false as well. The function f(x) = (1/2)^x is decreasing throughout the domain. A graph visually would show this due to it going downhill when moving from left to right. A table of values is a non-visual way to see we have a decreasing function. The table would show that y decreases when x increases.
3,000
whenever a number is 500 or over, you round it to the next thousand
hope this helps! :)
Reading through the problem we have "20 is", that's
"20 equals", "what percent", "x/100", "of 16", times 16.
So we have the equation 20 = x/100 · 16.
So cross-canceling the 16 and 100 to 4 and 25, we have 20 = 4x/25.
Multiply both sides by 25 to get rid of the
fraction and we have 500 = 4x so 125 = x.
Remember the =question is asking for "what percent"
so we should write our answer as 125%.
Finally, check to see if the answer makes sense.
Does "20 is 125% of 16" make sense?
