Hi there! Hopefully this helps!
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<h2>Answer:

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When you multiply two negatives (-, -,), you are gonna get a positive(+)
<em>[Like making a cross out of two lines].</em>

<h2>Since 3(7) normally <u>
equals 21</u>, that would be the answer for this case.</h2>
with it's formula
Area of Triangle = (1/2)(ab)sin(C) – This formula is used when two sides and the angle in between them are known. It can be obtained from the basic formula, Area of Triangle = 0.5 × base × height. The height with respect to side 'a' can be written in as b×sin(C), where C is the angle between a and b.
24.5 you take 3.5 and times it by 7 do get the distance.
3x + 11.63 = 20
3x + 11.63 - 11.63 = 20 - 11.63
3x = 8.37
by subtracting the 11.63 from both sides, this tells us how much the grapes cost....not per lb., but for the total of all the grapes.