Write in 0 and 0 at the top: this indicates that if there are zero pennies, the height of the tower is 0. This is the point (0,0). Another point is (4, 28): a tower of 28 pennies is 4 cm tall.
Find the slope of the line connecting (0,0) and (4,28).
4cm - 0 cm
m = ----------------- = (1/7) (cm/penny)
28 - 0
The equation we need, relating # of pennies to height of tower, is
t = (1/7) (cm/penny)x, where x is the # of pennies.
Thus, if x = 1, then t=1/7 cm
And, if x =15, then t = 15/7 cm
And so on.
Answer:
f(x) = f(-x) = x^2 -1 is an <u>even</u> function
Step-by-step explanation:
When f(x) = f(-x), the function is symmetrical about the y-axis. That is the definition of an <em>even</em> function.
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An odd function is symmetrical about the origin: f(x) = -f(-x).
Answer:
4,600
Step-by-step explanation:
To solve this problem, we need to multiply add 15% of 4,000 back to 4,000.
First, change 15% into a decimal:
15% ->
-> 0.15
Next, multiply 4,000 by 0.15:


The last step is to add the 600 back to 4,000:

The population of Smallburg the following year was 4,600.
Answer:
13/20
Step-by-step explanation:
To find this, divide 13 by 20 to get .65
Hope this helped!