In the given question, it is given that, the cost of telephone call, s, is $0.75 plus $0.25 times the number of minutes .
And we have to put the given informationin algebraic expression .
For the cost of telephone call, we have to use s and for the number of minutes, we need to use t .
So the required expression is
The correct is:
The definition of a function is that for every value of we get one from
.
In the first appears y
, it is not a function, since it does not meet the definition given above, there can only be one value for x, if there are
or more, called relation.
In 2 repeat: and
In 3 repeat: and
The system of equations don't have any solutions due to the exact same x-terms.
For this both system of equations, the answer is A.
The x-terms are the same for the equation to be false.
The constant, however, is indeed different as shown in the equation.