Choices A and B have typos in them, so its not clear what you're trying to say for those parts. However, the domain of 
is 
meaning that x can be 0 or larger. In other words, we can't have x be negative. Similarly, y is the same story because has the inverse 
, but only when , so therefore 
as well. In short you can say both x and y are nonnegative.
To summarize so far, the domain is and the range is
Since x = 0 and y = 0 are the smallest x and y values possible, this means (x,y) = (0,0) is the left-most point or where the graph starts. This is the origin. Choice C is a true statement.
Choice D on the other hand is <u>not</u> a true statement. Graph out and you'll see that a straight line does not form, but instead a nonlinear curve that grows forever. That growth gradually diminishes as x gets larger. Algebraically you can pick three points from the function and show that the slopes are different. Say the three points are P, Q and R. If you can show that slope of PQ does not equal slope of QR, then the function is not linear.
Hai!!! Your answer is both x=-10 and x=10
The answer to your question is -19
Answer:
a) $220
Step-by-step explanation:
We must calculate the price of each
A, you mention it, it's a total of 2250.
B, in this case we have to add up the expenses the quarterly value is every three months, therefore, to calculate the value of one month we must divide by 3:
1800 + 150 + 120 + 1200/3 = 2470
the quarterly value is every three months, therefore, to calculate the value of a single month we must divide by 3.
Now the difference is:
2470 - 2250 = 220
therefore the answer is a) $220
