There are about 400 cocoa beans in a pound. there are 2.2 pounds in a kilogram. about how many grams does a cocoa bean weigh?

Math it's appreciated. (picture provided)

Identify one charcteristic of exponential growth

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$