Alexis uses toy blocks to build a building. each toy block is 1 cubic inch. the first three floors of the model are made up of 6 rows or 4 blocks. floors 4- 8 are made up of 4 rows of 4 blocks. what is the volume of the model?

How can you decide witch operations to use to slice a two step equation

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

One cell phone plan charges $20 per month plus $0.15 per minute used. a second cell phone plan charges $35 per month plus $0.10 per minute used. write and solve an equation to find the number of minutes you must talk to have the same cost for both calling plans.