For the 7th grade snack cart, it costs .25 for each bag of Doritos. What do we need to sell the Doritos for to have a mark-up of exactly 80%?

Antonia and carla have an equivalant percentage of green marbles in their bags of marbles. antonia has 4 green marbles and 16 total matbles. if carla has 10 green marbles , how many total marbles does carla have

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?