THE PROBLEM SOLVING PROCESS

STEP 4 REFLECT: We figured out it was a summation expression Sigma notation. The number of hands everyone shook decreased by one for each person, then we had to add each handshake to find the total number of handshakes.For 10 people, there will be 45 handshakes. For 20 people, there will be 190 handshakes.

Bulldog Bath
hands

Click step 1 Click step 2 and 3 Click step 4