It does not matter whether or not you have a d or a c to use for an unknown number, because you do not know what that number is. The letter does not abbreviate something, it's just a symbol to fill in the place of the missing number.<span />
Answer:
The slope is 3/4
Step-by-step explanation:
3,7,11,15,19,23,27,31
32 = 8th term.
The common difference is +4
Answer:
p = 2
r = 4
Step-by-step explanation:
If you're doing parallel it needs to be like "side by side." The least you can do is 2 because you'll need at least one other line to be beside the original.
Perpendicular lines are intersecting, so if you intersect them as a plus sign, you'll make at least four right angles.
