a zookeeper realized that an alligator in the zoo in now four times the age that it was 15 years ago. how old is the alligator now

Solve 2x+y=3 x+y=5 in substitution method

What is the total surface area of this square pyramid?

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)