Let
x--------> the time in minutes
y-------> an altitude in feet
we know that
For x=0 min y=0 ft
For x=50 min y=52,000 ft
so
the rate of change is equal to calculate the slope of the linear equation
![(52,000-0)/(50-0)=(52,000)/(50)=1,040(ft)/(min)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/q7e4up3de5hit654tirlslkgnscpu19ins.png)
Round to the nearest hundred-------->
therefore
the answer is
![1,000(ft)/(min)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/hh91ta1roc1d2cslbvqscgmmyyfu5s6h4q.png)