Answer: You can buy 5 cans of tennis balls.
Step-by-step explanation: 100 minus 80 is 20 and that leaves $20 for tennis balls, so 20 divided by 4 is 5 and that's how many cans you can buy.
I would say Bar Graph but, a Pie Chart could work for this also.
In one year
1 + (23/100) = (1 + x)^12
1 + 0.23 = (1 + x)^12
(1 + x)^12 = 1.23
1 + x = 1.23^(1/12)
x = 1.23^(1/12) - 1
x =~ 0.017400841772181508280113627030242
That's about 1.74% per month (which is about 20.881% per year), compounded monthly, to equal 23% per year, compounded annually.
So I believe you can write
<span>I=(1+.0174<span>)<span>12t</span></span></span>or<span><span>I=<span>1.0174<span>12t</span></span></span></span>
