Answer:
Step-by-step explanation:
We can treat this as a units conversion problem. Each multiplier is a fraction that has the same value in the numerator as the denominator, but expresses that value with different units. We choose to cancel units we don't want, and replace them with units we do want. Ultimately, we're evaluating the expression ...
time = quantity/rate
(4 mi²) × (640 ac/mi²) × (5 min)/(2.5 ac) × (1 h)/(60 min)
= (4·640·5)/(2.5·60) h = 85 1/3 h
It will take about 85 hours to plant the farm.
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At 8 hours per day, that is (85 1/3)/(8) = 10 2/3 days.
It will take about 11 days to plant the farm.
Answer: x>-9
Step-by-step explanation:
Answer:
41
Step-by-step explanation:
substitute x=-2 and y=6, we know
8×6 +4×(-2) -(2×(-2) +3) = 48-8-(-1) =41
On the attached diagram you can see all graphs of functions b(x), d(x), m(x) and p(x).
Finding the inverse of a function f(x):
1. First, replace f(x) with y. This is done to make the rest of the process easier.
2. Replace every x with a y and replace every y with an x.
3. Solve the equation from Step 2 for y. This is the step where mistakes are most often made so be careful with this step.
4. Replace y with
In other words, you’ve managed to find the inverse.
5. Remember: the domain of f is the range of
and the range of f is the domain of
.
Using this algorithm, you can find the inverse only in case C:
for m(x)=-7x:
1. y=-7x.
2. x=-7y.
3. y=-x/7.
4.
.
5. The domain and the range of m(x) are all real numbers as well as the domain and the range of 
Functions b(x) and p(x) are not one-to-one functions (see attached diagram), then you can't find an inverse function. Function d(x) doesn't include x, then you can't also find an inverse function.