Figure one equals 1, Figure 2 equals 3, and Figure 3 equals 6 Emilio is using a guess and check strategy to write
an expression for the number of pennies in any
figure. He writes the expression n(n+1), where n
represents the figure number.
Compare the values you found for Emilio’s
expression in part to the number of pennies in
each figure. Use what you observe to modify
Emilio’s expression so that it is correct. Explain
your reasoning