lisa has $7.80 to spent on some tomatoes and alot of loaf bread . Tomatoes cost $1.20 per pound , and a loaf of bread cost $1.80
the ineqality 1.20x+ 1.80 < 7.80 models this situation , where x is the number of pounds of tomatoes
how many pounds of tomatoes can lisa buy ?
A. x > 8;lisa can buy 8 pounds or more of tomatoes.
B. x < 8 lisa can buy 8 pounds or less or tomatoes.
C.x > 5; lisa can buy 5 popunds or more of tomatoes.
D: x<5; lisa can buy 5 pounds or less of tomatoes.
.20x + 1.80 < 7.80 subtract 1.80 from both sides
1.20x < 6.00 divide both sides by 1.20
x < 5 ⇒ D
[ The only thing strange here is that if she has 7.80.....she sould be able to buy EXACTLY 5 lbs. of tomatoes !!!]