Which description is true about the transformation shown

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

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

Write the summation to estimate the area under the curve y = 1 + x2 from x = -1 to x = 2 using 3 rectangles and right endpoints