Answer:
D. x = 21
Step-by-step explanation:
x - 4= 17
Step 1: Add 4 to both sides
x - 4= 17
<u> +4 +4</u>
x = 21
6 I think because 6•3=18, 6•7=42, and 6•2=12
Answer:

Step-by-step explanation:
"And" indicates taking the <u>intersection</u> of two sets.
You want numbers that are in all three sets: multiples of 5, multiples of 2, and all 4-digit numbers.
It’s being divided by -3, so that means the next number is 1/3, or one third
We know that P is 1700, plus 120 for every copy of the book he sells. As a result, P=120N+1700. If N=29, we have P=120*29+1700, or P=3480+1700, so P=5180.