Find the number of possible choices for a two digit number that is greater than 19 then find the number of possible choices for a four digit personal identification number if the digits cannot be repeated

Identify the number as a rational or irrational. explain. 127

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.

Sam is a waiter at a local restaurant where he earns wages of $5 per hour sam figures that he also eams about $3 in tips for each person he serves sam works 6 hours on a particular day. if n represents the number of people sam serves that day, which of the following functions could sam use to figure ehis total earings for the do o a. en) = 30 o b. en) = 5n+ 18