The price of 9-volt batteries is increasing according to the function below, where t is years after January 1, 1980. During what year will the price reach
$5?
P(t) = 1.1.20.047
A 2012
B. 2016
O C. 2004
OD. 2008

Hi there I think that I can help you!

set P(t)=4 4 = 1.1e0.047t Divide both sides of the equation by 1.1 3.

Step-by-step explanation: The correct answer is either A or C

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step-by-step explanation:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3