The simple interest formula is I=Prt. what is the t stands for?​

The value √10 and √15 are plotted on the number line

Simplify the expression and find the missing terms. the simplest form of has in the numerator and in the denominator.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible