To find out how many 3 course meals there are you will multiply all three numbers together. The reason for this is that you can group each item with each of the other options. This is a triple grouping.
4 x 4 x 5 = 80
There are 80 possible combinations.
120° because 155-35=120 since IJZ is inside the IJK so you would have to subtract the ZJK from the IJZ.
negative 8 because 45/-9 = -5
Reflection across the y-axis and with a scale factor of 2
