Greetings from Brasil...
Follow the reasoning.
288 ÷ 2 = 144
and 144 its a perfect square (144 = 12²)
It is visible that if we multiply 288 by 1/2, we will obtain a perfect square, but we will do this via a simple equation
288 · X = 144
X = 144 ÷ 288
X = 0,5 ⇔ X = 1/2
Answer:
2n + 3
Step-by-step explanation:
To find twice a number, we can do it in several ways:
-
The first is adding the number twice, in this case the number is n, so the operation would be n + n = 2n.
- The other way is to multiply the number by 2, so 2 * n = 2n.
Then you have to add 3 to the result. The previous result was 2n so now we get:
2n + 3
-6 and 6 should be your answer
The present value of an income of $60 in 2 years and $50 in 1 year at an interest rate of 15% can be computed as ...
... ($60/1.15 +$50)/1.15 = $88.85
_____
The present value (PV) of an amount (A) received 1 year from now earning annual interest rate r is ...
... PV = A/(1 +r)
For a sequence of non-uniform payments, we can work backward through the years as we did above.
