X4 -3x + 1, 4x2 - 2x + 8, and x3 - 9

Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !