During another part of its flight the balloon in Exercise 10 had a change in elevation of -901 feet in 34 minutes. What was its rate of decent

26.5 ft per minute

Step-by-step explanation:

The hot air balloon descended 901 feet in 34 minutes.

The rate at which it was descending can be calculated by the speed formula which is:

= Distance descended / time

= 901 / 34

= 26.5 ft per minute

answer set (b) 0.5, 3/4 80% is in order from least to greatest.  

step-by-step explanation:

in order to compare rational numbers to each other, it is much easier if they are in the same form.   typically, the best form in which to evaluate rational numbers is in decimals.   in order to convert a percent to a decimal, you would divide the given percentage by 100.   you can also accomplish the conversion by moving the decimal point over two places to the left.   for example, the decimal value of 80% is 80/100, or 0.8.   in order to convert a fraction to a decimal, you need to divide the numerator by the denominator.   for example, 3/4 is 0.75.   so, for choice (b) 0.5 3/4 (0.75), 80% (0.8) is the only choice in which the numbers are in order from least to greatest.  

if you are looking for the unit rate then the answer would be 9 because unit rate is distance divided by time.

step-by-step explanation: