Amelia, an artist, plans to paint and sell some miniature paintings. She just bought some brushes for $30, and paint and canvas for each painting costs $10; she will sell each painting for $25. Once Amelia sells 'a certain number of her paintings, she will be breaking even. How many paintings will that be? Write a system of equations, graph them, and type the solution.

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi

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.