9.24 / (5.5 * 6) = 9.24 / 33 = 0.28 per oz
4.68 / (6.5 * 3) = 4.68 / 19.5 = 0.24 per oz
4.48 / (3.5 * 4) = 4.48 / 14 = 0.32 per oz
so the lowest cost is the 6.5 oz tuna in packs of 3 cans for 4.68
<span>y = -5 cos x is a basic (simple) variation of the basic trig function y = cos x.
The given </span>y = -5 cos x could be re-written as <span>y = -5 cos 1x.
Compare this to the most general form: y = a cos bx.
Here we see that the coefficient b equals 1.
There is a rule for finding the period of such a function: Period = 2pi/b.
Since b = 1 here, the Period here is 2pi/1, or simply 2pi.
Please stop saying "I'm terrible with math." That does not help you at all. Say, instead, "With just a little help I could understand this just fine."</span>
Answer:
1. 8/$12=21/$x then cross multiply.
2. 1/$1.5, we're looking for cost so $1 is more reasonable
3. $31.5
Step-by-step explanation:
12x 21/ 8 = 31.5
