Math URGENT!!

The speed of a runner increased steadily during the first three seconds of a race. Her speed at half-second intervals is given in the table. Find a lower estimate for the distance that she traveled during these three seconds.

t(s) 0 0.5 1.0 1.5 2.0 2.5 3.0
v(ft/s) 0 3 6.6 9.9 11.5 11.8 12

I know that delta x is 3/7 and I tried multiplying t*v and then doing the area thing... I don't know what to do please help!

low estimate= avg veloctity*time= 12/2 *3= 18m

The area thing ought to give you the actual distance.

i got it thanks!

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