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

Round to the nearest hundred-------->
therefore
<u>the answer is</u>

So you're trying to find what number is like that right? Well multiply the denominator by the 20 (20*4) which equals 100, so 100-20 (the one fourth) is 80. So 3/4 fourths of 100 is 20.
Answer:
Option 4: r ≥ 6
Step-by-step explanation:
5(6+3r) + 7 ≥ 127
30 + 15r + 7 ≥ 127
37 + 15r ≥ 127
15r ≥ 90
r ≥ 6