We don't know what the question is.
It could be "What is the selling price ?"
If that's the question, then . . .
Since the store marks up their cost by 60% before they sell
the thing, the price they sell it for is
(1.60 of their cost).
You know their cost. The selling price is (1.60 x $80) .
100+4x =7x
100=3x
100/3 = 33.33
x = 33.33 round up to 34
they need to sell 34 pizzas to make a profit
<h3>
Answer: Choice D. 4x^2 + 20x + 25</h3>
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Explanation:
Perfect square trinomials are in the form (a+b)^2 = a^2+2ab+b^2
So the first and last terms must be perfect squares. The middle term is twice that of the square roots of each first and last term.
Choice D fits the description because 4x^2 = (2x)^2 is the first term, so a = 2x and 25 = 5^2 is the last term meaning b = 5. Note how 2ab = 2*2x*5 = 20x is the middle term.
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(a+b)^2 = a^2+2ab+b^2
(2x+5)^2 = (2x)^2+2*2x*5+5^2
(2x+5)^2 = 4x^2 + 20x + 25
Answer:
-9x+27
Step-by-step explanation:
