Answer:
The answer is C
Explanation:
This is because 2(-2) + -2 is smaller than -4
Let
x-------> yards of fabric used to make pillows
y-------> yards of fabric used to make curtains
T------> total yards of fabric
R-------> remaining yards of fabric
we know that

we have

substitute in the formula above



therefore
<u>the answer is</u>
the remaining of fabric is 
Answer: C. 14
Step-by-step explanation:
As the mapping suggests, the first (x) coordinate is decreased by 3, and the second (y) coordinate is increased by 2. So, given the inputs, you have


And yes, this rule is a function: it has a starting set (the domain), which is all possible couples
, and a landing set (the codomain), which is again composed by the couples
. Since for every point in the domain you have one and only one output, this rule is a function.