4^x+3 (the x + 3 is included in the power). That's just another way that you could write that.
the bush shelter
can help you well try this method
The answer is D
Have you ever heard of rise over run rise/run
Y/x. Well in this case the run is One with a rise of four
Answer:
There is a 44.16% probability that exactly 1 of the tested bottles is contaminated.
Step-by-step explanation:
is the number of different combinatios of x objects from a set of n elements, given by the following formula.

In this problem, we have that:
Total number of combinations:

Desired combinations:
It is 1 one 5(contamined) and 2 of 17(non contamined). So:

What is the probability that exactly 1 of the tested bottles is contaminated?

There is a 44.16% probability that exactly 1 of the tested bottles is contaminated.
Answer:
6y - 8xy
Step-by-step explanation:
2y-3xy+4y-5xy
Combine like terms:
(2y+4y) + (-3xy -5xy)
6y - 8xy