# Yosief goes on adventure drive to Yellowstone with his family. The journey takes 17 hours and Yosief charts the speed of the RV from the Tachometer on notebook, see below. Use Yosief's chart to estimate the distance from Phoenix to Yellowstone?

May 19, 2016

$\text{distance=912.5 mile}$

#### Explanation:

$\text{estimated distance from Phoenix to Yellowstone is equal to area under graph}$
$\text{area ABJ="(40*0.5)/2=10" mile}$
$\text{area JBCK="((40+50)*2.5)/2=112.5" mile}$
$\text{area KCDL="50*1=50" mile}$
$\text{area LDEM="((50+60)*3)/2=165" mile}$
$\text{area MEFN="60*1=60" mile}$

$\text{area NFGO="((60+80)*0.5)/2=35" mile}$

$\text{area OGHP="80*3.5=280" mile}$

$\text{area PHI="(80*5)/2=200" mil}$

$\text{distance=} 10 + 112.5 + 50 + 165 + 60 + 35 + 280 + 200$

$\text{distance=912.5 mile}$