Etienne used a 10-20 placement system for ?
electrodes. In this system, the distance between each
one is either 10% or 20% of the total front-to-back distance
of a person's skull. One patient's skull measures 36 cm.
What's the smallest distance between their electrodes?

Florence price's brownies and more sells all types of cookies and pastries. on tuesdays, they markdown all brownies 75% to a sale of $1.50 a dozen. find the selling price and the markdown of a dozen brownies.

Sarah took the advertising department from her company on a round trip to meet with a potential client. including sarah a total of 11 people took the trip. she was able to purchase coach tickets for $280 and first class tickets for $1280. she used her total budget for airfare for the trip, which was $6080. how many first class tickets did she buy? how many coach tickets did she buy?

Is the point (0, 8) on the x-axis or y-axis? how do you know?