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JulsSmile [24]
3 years ago
7

The sale price of every item in a store is 85 percent of its usual price a. The usual price of a backpack is $30, what is the sa

le price? B. The usual price of a sweatshirt is $18, what is it’s sale price
Mathematics
2 answers:
VashaNatasha [74]3 years ago
6 0

Answer: A.  $25.5

B.  $15.3

Step-by-step explanation:

Given : The sale price of every item in a store is 85 percent of its usual price

A. The usual price of a backpack is $30.

Then , the sale price = 85% of (usual price of a backpack )

= 0.85  x ($30)

= $25.5

Hence, the sales price of backpack = $25.5

B. The usual price of a sweatshirt is $18.

Then , the sale price of sweatshirt = 85% of ( usual price of a sweatshirt)

=0.85 x ($18)

= $15.3

Hence, the sale price of sweatshirt =  $15.3

zlopas [31]3 years ago
4 0
for A multiply 85 and 30. then subtract 30 by the product, this gives you the sale price. For B you do the same thing but you multiply 18 and 85. then 18 subtracted by the product which gives you the sale price.
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=========================================

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3. We have negative correlation because the regression line is going downhill (move from left to right). The points are fairly close to the same regression line, so I'd say we have either moderate or fairly strong negative correlation. That means r is fairly close to -1. It's not -1 exactly since that would have to mean all points are on the same line.

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6. Refer to problem 5.

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