I REALLY NEED HELP NOW!! Calculate the AVERAGE SPEED of 400m in 80 seconds.

a. .2 m/s
b. 5 m/s
c. 32000 m/s
d. you need to use your calculator d/t = average speed

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4