Is it possible to state the exact legth of the circumference as a decimal

If f(x) = 3-2x and g(x) =1/x+5 to what is the value (f/g)(8)

At school there are 526 students and 263 are girls about how likely is it that a randomly chosen student will be a boy

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil