Find the number of different ways that an instructor can choose 3 students from a class of 27 students for a field trip. Hint: The order of selection of the students for the trip does not matter.

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each, and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent. how much did jamie pay at the end?

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap