Which problem can be solved using this equation? 2/5b = 4 a) kyle's class is making banners for a fund raiser. they have 4 yards of material. how many banners can they make? b) kyle's class is making banners for a fund raiser. each banner takes 2/5 yard of material. how many banners can they make? c) kyle's class is making banners for a fund raiser. each banner takes 2/5 yard of material. they have 4 yards of material. how many yards will be left? d) kyle's class is making banners for a fund raiser. each banner takes 2/5 yard of material. they have 4 yards of material. how many banners can they make?

to find the unit price, we must figure out the cost of one item (in this case one dish towel).   to do this, we divide the total price ($7.92) by the number of items bought (for this problem it is 8, because there are eight dish towels in one pack).  

$7.92/8 = $0.99

therefore, the unit price, or the price of one dish towel, is $0.99.

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a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.