(A) Chris wants to buy a snow blower priced at $400.00. The manager informs Chris that the air conditioner will be on spring sale 30% off next week. There will also be 6% sales tax on the
discounted price of the air conditioner. How much will Chris pay, including tax, for the air
conditioner next week?

I need help with this quick please!!!

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

Amira is painting a rectangular banner 2 1/4 yards wide. the banner will have a blue background. amira has enough paint to cover 1 1/2 square yards of the wall. the school colors are blue and yellow, so amira wants to add yellow rectangles on the left and right sides of the blue rectangle. the yellow rectangles will each be 3/4 yards wide and the same height as the blue rectangle. what will be the total area of the two yellow rectangles?

Rationalize the denominator- 12x/√x-10