Mary and Carl drove to the store to shop. Their trip to the store and back home is graphed here. What was their average speed on the way home from the store?
A) 30 km/h
B) 40 km/h
C) 60 km/h
D) Cannot tell from this data.

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.

you get 2.3=1.21*\frac{a}2 or 4.6=1.21a or a=3.802 (b)

explanation: