Answer:
45
Step-by-step explanation:
The order in which the items are chosen is not important. So we use the combinations formula to solve this question.
Combinations formula:
is the number of different combinations of x objects from a set of n elements, given by the following formula.

How many possible subsets of 2 items can be chosen from this lot?
Combinations of 2 from a set of 10. So

Answer:
11 hours babysitting
7 hours music lesson
Step-by-step explanation:
(11*5) + (7*12) = 139
Answer:
v
Step-by-stedcvp explanation: welcome to family fued
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The average rate of change of the function from x = 0 to x = 2 is -2
From the complete question (see attachment), we have the following ordered pair when x = 0 and x = 2

The average rate of change is calculated using:

So, we have:

Evaluate common terms

Divide -4 by 2

Hence, the average rate of change of the function from x = 0 to x = 2 is -2
Read more about rate of change at:
brainly.com/question/8728504