If one store sells 12 pens for $9.00 and another sells 10 pens for $7.80, which is the better deal? if you have to buy 120 pens, how much will you save by using the less expensive supplier?

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Icould really use some with this question.

Stefano accidentally dropped his sunglasses off the edge of a canyon as he was looking down. the height, h(t), in meters (as it relates to sea level), of the sunglasses after t seconds, is shown in the table. during its descent, the pair of sunglasses passed by a climber in the canyon 6 seconds after stefano dropped them. to the nearest meter, what is difference in elevation between stefano and the climber? 166 meters 176 meters 230 meters 240 meters its b.176 i took the test 166 is wrong and 176 is correct