Answer:
Step-by-step explanation:
1). Given equation is,
2x² - 3x = 6
2x² - 3x - 6 = 0
To find the solutions of the equation we will use quadratic formula,
x = 
Substitute the values of a, b and c in the formula,
a = 2, b = -3 and c = -6
x = 
x = 
x = 
x = 
Therefore, there are two real solutions.
2). Given equation is,
x² + 1 = 2x
x² - 2x + 1 = 0
(x - 1)² = 0
x = 1
Therefore, there is one real solution of the equation.
3). 2x² + 3x + 2 = 0
By applying quadratic formula,
x = 
x = 
x = 
x = 
x = 
Therefore, there are two complex (non real) solutions.
It is given in the question that
Emily’s last water bill listed a previous reading of 7,123 ccf and a present reading of 7,171 ccf. Her water company charges $0.73 per ccf of water.
Therefore number of ccf is

And company charges $0.73 per ccf.
So for 48 ccf, company charges

And that's the required answer .
Answer:
The expression would be 5x + 2y = 20
Step-by-step explanation:
We let x be no of hardcover books, and 5x the cost of those books
Same for paperbacks.
then we add them up to 20.
Done!
$23,500.00 × (0.011) = $258.50 of ownership tax
The speed of the boat will be 10 mph in still water