You have added -13 to every function value, so every point on the graph is 13 "spaces" lower. The y-intercept is one such point, so ...
-The y-intercept is 13 spaces lower.
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<em>Comment on notation</em>
In plain text an exponent is preceded by a caret (^). If the exponent has arithmetic involved (addition, subtraction, multiplication, division), then the entire exponent needs to be enclosed in parentheses. When an exponential term that has a constant base is multiplied by another constant, then some sort of multiplication indicator is useful. Your expressions might be written ...
... f(x) = 4·2^x
... f(x) = 4·2^x - 13 . . . . . . or, better, f(x) = 4(2^x) - 13 . . so it is clear -13 is not part of the exponent
This problem is a simple matter of subtraction.
We know our starting balance, which is 20. If we are buying something with our money, we are subtracting the amount we spend from the amount we have. If we're buying a DVD that costs 32 dollars, we subtract 32 from our starting balance, which is 20.
20 - 32 = -12
So, your account balance after you buy the DVD is -12. This means you are twelve dollars in debt.
Difference between the night and and low temperature is 29
4 pupils can eat 12 because if you times 6 by 2 you get 12, so if you do the same to the other side then you'll get the answer 4 (2X2=4)
Answer: 20
Step-by-step explanation:
Formula to find the minimum sample size(n) when prior population standard deviation
is known.
, where E = Margin of error , 
= Critical z-value for c confidence interval.
Given : E = 225 g , 
g
Critical z value for 90% confidence = 1.645
Now, 
Hence, the required minimum sample size = 20
