What is the domain and range also read the stuff at the top of the picture

Number nine is f(x)= 40x : ) hoped i ya

To convert decimals to  percents you simply multiply the  decimal  by 100. decide what place value you want yourdecimal to  represent, such  as  tenths, hundredths or thousandths. underline the place value so you have a reference point for rounding. round your  repeating decimal to  the nearest place value of your choice.

17 yards and 1/3 of a yard