Answer:
9.92
Step-by-step explanation:
8.63 x 1.15=9.92
Area of circle = πr²
19 5/8 = πr²
r² = 19 5/8 ÷ π
r² = 6.25
r = √6.25 = 2.5 units
Answer: 2.5 units
Answer: x<69
Step-by-step explanation:
For this problem, we solve is just as we would if it was an equal sign.
x+9<78 [subtract 9 on both sides]
x<69
well, let's see the 10-pack is $15.37 BUT each of those 10 bars are 2.1 oz, so for the whole package you're getting really 10 * 2.1 = 21.0 oz.
the 12-pack costs $15.35 BUT each of those 12 bars are 1.4 oz, so for the whole package you're getting 12 * 1.4 = 16.8 oz.
which is the better deal? which one gives you more ounces for the money? after all, you're going to eat the bars, so you want more ounces, not more bars.
![\bf \cfrac{15.37}{21}\cfrac{\$}{oz}~~\approx ~~0.73~\frac{\$}{oz}~\hspace{10em} \cfrac{15.35}{16.8}\cfrac{\$}{oz}~~\approx ~~0.91~\frac{\$}{oz}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B15.37%7D%7B21%7D%5Ccfrac%7B%5C%24%7D%7Boz%7D~~%5Capprox%20~~0.73~%5Cfrac%7B%5C%24%7D%7Boz%7D~%5Chspace%7B10em%7D%20%5Ccfrac%7B15.35%7D%7B16.8%7D%5Ccfrac%7B%5C%24%7D%7Boz%7D~~%5Capprox%20~~0.91~%5Cfrac%7B%5C%24%7D%7Boz%7D)
so clearly you'd want to get the cheapest one with more ounces, so at $0.73 or 73 cents for each ounce, the 10-pack is the cheapest.
F(-3)=G(-4) the lines meet at that point.