There are well over 200 boys altogether and only 56 chose Niagara Falls — way less than half so 2 of the answers can be eliminated.
How many boys chose Niagara Falls?
What was the total number of boys?
56 out of the total number of boys
This question can be done in many ways. Students can cross multiply or find a common denominator or even try each of the four answers to find the one that when you add 10 to that number (x + 10) and then divide that by 15, the answer is 4/3.
That’s it — 2 points on the Regents!!
For this question, we need to use the Distributive Property:
2(x^2 – 1) = 2x^2 – 2
3x(x – 4) = 3x^2 – 12x
Combine like terms and only the x^2 are combinable.
A way to check your work is to put 2(x^2 – 1) + 3x(x – 4) into Y1 and to put each multiple choice answer into Y2 and then compare to see if the tables for Y1 and Y2 are equivalent.
A function is defined as no repeating x values. Please take a look above and see which table has unique x values. That’s it — 2 points 🙂
This is actually a reading question!
If x = 0, it will still cost 250
If x = 1, the cost should be 273 (250 + 23)
If x = 2, the cost should be 296 (250 + 23 + 23)
Try these values for x and you will find the answer 🙂