This scenario below represents exponential growth. Explain why?
A species of fly doubles its population
every month during the summer.

A species of fly doubles its population every month.

Step-by-step explanation

"Double" is the key word. A linear expression does not double, but rather goes up at a constant rate, where as doubling does not.

Quadratics also do not double. Quadratics go up and down at some point and if it only doubles, then that mean it is constantly increasing.

m∠a is 90°

m∠b is 40°