Order the expressions from least to greatest value. -3 3/10 - ( -7/20) 5 6/15 + (-2 4/5) 5/-1.6 -4.5 x -2.3

How many $20 bills do you need to have to make $280

Tim's phone service charges $26.39 plus an additional $0.21 for each text message sent per month. if tim's phone bill was $31.64, which equation could be used to find how many text messages, x, tim sent last month?

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?