Answer:
$654.98
Around 7.7 years
Step-by-step explanation:
Value = P × e^(rt)
= 500 × e^(0.09×3)
= 500 × e^(0.27)
= 654.9822254
Double: 500 × 2 = 1000
1000 = 500 × e^(0.09t)
e^(0.09t) = 2
Use ln both sides
0.09t × lne = ln2
t = ln2 ÷ 0.09
t = 7.70163543
ANSWER
A

EXPLANATION.
The given function is

Let

Solve for x.


Take cubic root of both sides,
![x = \sqrt[3]{ \frac{1}{2} y - \frac{21}{2} }](https://tex.z-dn.net/?f=x%20%3D%20%5Csqrt%5B3%5D%7B%20%20%5Cfrac%7B1%7D%7B2%7D%20y%20-%20%20%5Cfrac%7B21%7D%7B2%7D%20%7D%20)
x is defined for all real values of y.
The range refers to the values of y, for which x is defined.
Hence the range is all real numbers.
In interval notation, we write this as,

The correct choice is A.
Answer:
Step-by-step explanation:
Plugin x = 0 & y = -2 in the LHS of the equation. After substituting, if you get the RHS, then this point is the solution of the equation.
x - 2y = 0 - 2*(-2)
= 0 + 4
= 4 = RHS.
(0,-2) is solution of the equation.
I think it would be $180 because $2,400-$1,500 is $900. $900-80%=$180
Answer:
125,000
Step-by-step explanation:
Multiply 500 by 2.50