Okay so, f(x) is another way of writing y.
If the problem were to give you an x value you would put it in the x spot.
For example:
f(x) = 1/2x - 7
is the same thing as y = 1/2x - 7
If the problem were to say: "Solve for y, if x = 2" your problem would look like this
f(2) = 1/2(2) + 7
Now, multiply 1/2 by 2, and you get 1. Now the equation is:
f(2) = 1 + 7
So add 1 and 7 = 8
so that would be f(2) = 8
And your final answer would be y = 8
<em><u>I hope this helps and makes a little sense!</u></em>
Answer:
To determine the compound interest of a certain investment, the following formula should be used:
X = Initial value (1 + interest rate / number of compositions) ^ years x number of compositions
Thus, in the assumption of an investment of $ 1,000 with interest compounded daily at 3% for 8 years, the formula would be the following:
X = 1,000 x (1 + 3/365) ^ (8x365)
X = 1,271.24
On the other hand, in the case of an investment of $ 1,000 with compound interest every 6 months at 3% for 8 years, the formula would apply as follows:
X = 1,000 x (1 + 3/2) ^ (8x2)
X = 1,268.99
X + y = 90
Let's make 'x' the bigger angle and 'y' the smaller.
X is 24 more than twice y.
x = 24 + 2y
Now plug that into the x of the first equation.
(24 + 2y) + y = 90
Combine like terms.
24 + 3y = 90
Subtract 24 from both sides.
3y = 66
Divide both sides by 3.
y = 22
The measure of the smaller angle is 22°
25,000
I always think of the rhyme "5 or more raise the score, 4 or less let it rest"
