Multiply principle by time by rate
1200(.02)(5)
120
The original price for one lunch special is $19.
<em><u>Explanation</u></em>
The original price for one lunch special is 'p' dollar.
He wins a coupon for $4 off for each of five days. That means , <u>he needs to pay
dollar each day</u>.
So, the total amount needed to pay for 5 days
dollar
Given that, <u>he pays $75 for his 5 lunch specials</u>. So the equation will be.....

So, the original price for one lunch special is $19.
For multiplication, if both integers have like signs, it is always positive. If they have unlike signs it is negative.
For division, if both integers have like signs it is positive. If they have unlike signs it is negative.