Sophia is saving money to buy a chemistry set. The first week she saves $1, the second week $4, the third week $16, and so on. How much money will she save the fifth week?
If the money saved is the y coordinate, it appears that each y coordinate is multiplied by 4 to get to the next one. 1 * 4 = 4, 4 * 4 = 16. 16 * 4 = 64 in the 4th week, and 64 * 4 = 256 in the 5th week.
