Thx, 5 star and brainliest for first

In calculating this, you would have to find the unit price first.

$13 per 3 1/4 yards is also equal to $4 per yard.

Then you would have to find out the other ones' unit prices.

a) $16 per 4 2/3 yards is equal to around $2.82 per yard, so No

b) $11 per 2 3/4 yards is equal to $4 per yard, so Yes

c) $26 per 6 1/2 yards is equal to $4 per yard, so Yes

I solved these by dividing the amount of money by the amount of string.

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol