Astore is having a sale in which all items are reduced 20%. including tax, jennifer pail $21 for a pair of shorts. if the sales tax is 5%, what was the original price of the shorts

$25.

Step-by-step explanation:

Let x be the original price of shorts.

We have been given that a store is having a sale in which all items are reduced 20%. The  sales tax is 5%.  

The price of shorts after 20% off will be:

Since tax is added after the discount, so the price of shorts after including the tax will be:

We are told that including tax, Jennifer paid $21 for a pair of shorts. So we can set an equation as:

Now let us solve for x.

Therefore, the original price of shorts was $25.

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1