PLEASE HELP
liana is painting a picture. She has green, red, yellow, purple, orange, and blue paint. She wants her painting to have four
different colors

If order does not matter, in how many ways can she pick four colors if green must be one of them?

A. 4
B. 6
C. 10
D. 15

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is