Answer:
C) 
Step-by-step explanation:

Group the similar terms together:

Add/subtract the "c" variables:

Add/subtract the "d" variables:

Answer:
A Exactly one solution
Step-by-step explanation:

Putting y=0 at second equation, we have

The unique solution is 
Length x width = area
<span>but
1feet=12</span><span>inches
</span>8 x 12=96
10<span>x96=960</span>
Answer:
928
Step-by-step explanation:
Answer:
2 degrees
Step-by-step explanation:
There is 360 degrees in a circle, triangle, square, and a ton of other shapes, and 280 plus 78 gives you 358 degrees. 360 - 358 equals 2 degrees.
Hope this helps!