I have two Questions. 1. Find the unit rate of 90 miles/2 hours, in feet per second.

2.Find the unit rate of 120 miles in 8 hours, in feet per second.

(extra credit: Extra Credit: How many unique handshakes can be made between 5 people?)

Step-by-step explanation:

ww have that 90 miles /2 hours is given and we are asked to find it in feet per second.

So we get

66 fps.

2.

So we get 22 fps.

Extra credit There is 5 people and 2 hands so we use the combinations formula.

n!/r!(n-r)!. where n is the number of objects (the number of people) and r is the things taken at the time( the hands)

Subsitue

divide by 5

step-by-step explanation:

60/5 = 12