Answer:
Step-by-step explanation:
we know that
To find out the mean change of altitude, divide the total change by the amount of time it takes
so
---> is negative because the airplane is descending
The graph of the function f(x) = –(x + 6)(x + 2) is shown below.
1 answer:
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Answer:
First choice
Step-by-step explanation:
The difference quotient in general is . To get an expression for
, replace x with x + h.
For this question,
Factor out of the numerator.
Step 2 was his error.
The following problem is solved by Alan:
In solving for x, you have to cross multiply between the numbers.
In that case, step 2 would look like this:
(25)(x) = (8)(200)
NOT THIS:
(8)(x) = (25)(200)
Now continue all the way.
25x = 1600
x = 1600 ÷ 25
x = 64
