So scientific notation involves two numbers: one is ten and the other ranges from 0 to 10. In this case your value would be 7 and to notate it so it is equal to 700 you would put 10 to the second power... hope this helps :)))
The regular price is 5 for $2.95. One can is $2.95/5 = $0.59. Three cans are $1.77. With the $1 rebate, the final price would be $0.77 for 3 cans, $0.25 per can.
