Last year, sales at a book store increased from $5,000 to $10,000. this year, sales decreased to $5,000 from $10,000. what percentage did sales increase last year? what percentage did sales decrease this year?

Solution:

we are given that

Last year, sales at a book store increased from $5,000 to $10,000.

As we know that percentage increase is given by the formula

Percentage increase

Substitute the values we get

Percentage increase

Percentage increase %.

This year, sales decreased to $5,000 from $10,000.

Percentage Decrease

Substitute the values we get

Percentage Decrease

Percentage Decrease %.

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent

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