When estimating, compatible numbers are numbers that are close in value to the actual numbers, and which make it easy to do mental arithmetic.
Answer:
so at (0,20) she spent all the money on (20) orange juice and 0 coffee
then at (15,0) she spent all the money on (15) coffee and 0 orange juice
Step-by-step explanation:
4, vertical, horizontal, and both diagonals
