Answer:
(x,y) becomes (-x, y)
Step-by-step explanation:
Step-by-step explanation:
Given,
No. of yards required for each quit = 3 7/8
can also be written as = 59/8
so,
yards,
required for 2 quilts = 2 × 59/8 = 14 3/4
required for 3 quilts = 3 × 59/8 = 23 4/8
required for 4 quilts = 4 × 59/8 = 8 1/2
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Let 'x' be the problems worth 2 points.
Let 'y' be the problems worth 3 points.
Since, there are 38 total problems.
So,
(equation 1)
x = 38-y
Since, a perfect score is 100 points.
So,
(equation 2)
Substituting the value of 'x', we get



y = 24
x+y = 38
x = 38-24 = 14
So, 14 problems are worth 2 points and 24 problems are worth 3 points.
<span>Eighty-four thousand, fifty-two</span>