Question

I need the answer for 10 and how you got the answers

Answer 1

Answer:

A. $y=\frac{3}{4} x$ B. 25% discount

Step-by-step explanation:

PART A:

For the shirt:

$y=$Sale price of the shirt=$18

$x=$Cost of the shirt=$24

Now, $\frac{x}{y} =\frac{24}{18} =\frac{4}{3}$

⇒$y=\frac{3}{4}x$

For the pair of shoes:

$y=$Sale price of the pair of shoes=$42

$x=$Cost of the pair of shoes=$56

Now, $\frac{x}{y} =\frac{56}{42} =\frac{4}{3}$

⇒$y=\frac{3}{4}x$

So, the equation that represents the sale price y of an item that costs x dollars is: $y=\frac{3}{4} x$

PART B:

y=Sale price of an item

x=Cost of the item

Discount on the item $=x-y=x-\frac{3}{4} x=\frac{x}{4}$

Percentage discount on the item$=\frac{\frac{x}{4} }{x}$×100$=25$%