Answer: a = 22
Step-by-step explanation: First isolate a/3 by adding 7 to both sides of the equation. That gives you a/3 = 22.
From here since <em>a</em> is being divided by 3, multiply both sides of the equation by 3 so <em>a</em> <em>= 66</em>. We can check our answer by substituting a 66 back in for <em>a</em> in the original equation and we have 
or 22 - 7 = 15 or 15 = 15. Since this is a true statement, our answer checks.
Based on the example given, I'm guessing you're supposed to round to the nearest thousand, so that's what I'll do.
2. Round 5339 to 5000, multiply by 6 to get the estimate of 30,000.
3. Round $879 to $1000, multiply by 8 to get the estimate of $8000.
4. Round 3182 to 3000, multiply by 5 to get the estimate of 15,000.
5. Round 4616 to 5000, multiply by 3 to get the estimate of 15,000.
6. Round $2854 to $3000, multiply by 9 to get the estimate of $27,000.
7. Round 7500 to 8000, multiply by 2 to get the estimate of 16,000.
8. Round 948 to 1000, multiply by 7 to get the estimate of 7000.
Answer:
1182 mg to the nearest mg.
Step-by-step explanation:
22% is equivalent to 260 mg sodium, so
100% is equivalent to 260 * (100/22)
= 1181.82 mg.
15
729 x +1000
Hope this helps
What you do here is replace is the given x value to find the y one
Like for the first box the y (top-to-down) would be found using y=3(-2)+4 which is gives y=-2
Applying the same for each in order:
(-2,-2)
(-1,0)
(0,4)
(1,7)
(2,10)
Ordered pairs are typed in (x,y) format like the answers I gave above
