· A store has put a robotics kit on sale for 25% off the original price. If the original price is
$40, what is the soles price?

$30

Step-by-step explanation:

If an item is 25% off of it's original price, off  it is 75% of it's original price.

(100-25=75)

So, what we need to do is find 75% of 40.

0.75*40=30

The sales price is $30.

3.76%

step-by-step explanation:

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt