The value of Greta's rolls of coins is $121.00. If pennies and dimes come in rolls of 50 coins each, and nickels and quarters come in rolls of 40 coins
each, which of these combinations could Greta have?
O A. 8 rolls of pennies, 6 rolls of nickels, 3 rolls of dimes, and 9 rolls of
quarters
B. 6 rolls of pennies, 8 rolls of nickels, 3 rolls of dimes, and 9 rolls of
quarters
C. 6 rolls of pennies, 8 rolls of nickels, 9 rolls of dimes, and 3 rolls of
quarters
O D. 8 rolls of pennies, 3 rolls of nickels, 6 rolls of dimes, and 9 rolls of
quarters

The correct answer is b

Well an average of 364, but possibly 252 if you are especially eager. 

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.