Afuel is purified by passing it through a clay pipe. each foot of the clay pipe removes a fixed percentage of impurities in the fuel. let f(x) represent the amount of pollutants, in tons, left in the fuel after it had passed through x feet of the clay pipe: f(x) = 10(0.8)x what does the number 0.8 represent? every foot of the pipe keeps 80% of the pollutant. every foot of the pipe removes 80% of the pollutant. the original amount of pollutant present in the fuel was 80 tons. the original amount of pollutant present in the fuel was 20 tons.

The equation calculates the amount of pollutants left in the fuel, so the 0.8 in the equation would represent that every foot of the pipe keeps 80% of the pollutant.

answer: domain and range mean all possible values of x and y that could be substituted to the inequality. a solution means all possible values that make the inequality statement true. so while the range is still all real numbers, the solution is the shaded area, for which y will always be greater than the line of the function.

there are 70 more legs than eyes at the dog show (196 – 126 = 70). dogs have two more legs than eyes, and humans have the same number of legs as eyes. thus 70 is twice the number of dogs at the show, so the number of dogs is half of 70, which is 35. to get the number of humans, subtract 35 from 63: 63 – 35 = 28.

step-by-step explanation: