Answer:
$19.23
Step-by-step explanation:
First, add the prices of all 5 comics together. That should equal $17.63. The tax is 9% so that would be 1.5867 or $1.60. In total, Sami paid $19.23.
To answer this question you will set up a system of equations to represent each scenario. Solve for one variable and substitute that in to the other equation to find the missing value. This example will have you solving for p, the price of popcorn.
4p + 3s = 13.50 and 2p + 5s = 12
2p + 5s = 12
-2p -2p
5s = 12 - 2p
5 5
s = 2.4 - 0.4p
4p + 3s = 13.50
4p + 3(2.4 - 0.4p) = 13.50
4p +7.2 - 1.2p = 13.5
2.8p +7.2 = 13.5
-7.2 -7.2
<u>2.8p</u> = <u>6.3</u>
2.8 2.8
p = 2.25
The price of popcorn is 2.25 and the soda is (2.4 - 0.4 x 2.25) $1.50.
5 popcorn and 2 sodas will cost (2.25 x 5 + 1.50 x 2) = $14.25.
Answer:
The third one (parabola)
Step-by-step explanation:
Do a vertical line test.
Basically draw vertical lines over the function. If the x-value has more than one y-value then it is a relation and not a function
Compare the volume formulas for the prism and the pyramid:
Prism: (base)(height)
Pyramid: (1/3)(base)(height)
Thus, if the volume of the prism is 66 cu in, the vol. of the triangular pyramid is (1/3)(66 cu in) = 22 cu in.
Answer:
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