<h3>A is the answer EEEE</h3>
820 + .06(820)
820 + 49.2
869.2
The cost of the car is $869.20.
Step-by-step explanation:
the error:
it is stated that
subtract (5x)/(x+7) from both sides

multiply both sides by x + 7
7(x+7) = 49x
7x + 49 = 49x
subtract 7x from both sides to isolate x and its coefficient
49 = 42x
thus, this is only true when 49 = 42x. in order for these two equations to be equal, they must <em>always </em>be true, so this is wrong
the solution:
we want to express 7/x as (something) / (x+7). to do this, we can multiply 7/x by 1.
anything divided by itself = 1. thus, if we multiply both the numerator and the denominator by something that turns x into (x+7), we can do what we want to do.
(x+7)/x * x turns x into (x+7), so we multiply both the numerator and denominator by (x+7)/x to get

substitute this for 7/x in our original problem

Answer:
Step-by-step explanation:
Which of the relations has a domain of (-1, 2, 6)?
Options
A- {(-1,2), (2,1),(6,2)}
B- {(-1,2), (0,1), (3,2)}
C-{(-6,2), (1,1), (2,2)}
D- {(-2,2), (1,2), (6,4)}
Answer is either x= 1/2 x=-5