Answer:
a. 400
b. 4$
Step-by-step explanation:
2$ equals 0 Quantity
3$ equals 100 Quantity
4$ equals 200 Quantity
We can see that starting from 2$, a dollar will increase the Quantity by 100
Answer: Choice A. (8, 4)
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Explanation:
Because x = 2y, we can replace every copy of x with 2y
Let's do so in the second equation
3x - 4y = 8
3(x) - 4y = 8
3(2y) - 4y = 8 .... x replaced with 2y; now let's isolate y
6y - 4y = 8
2y = 8
y = 8/2 ..... divide both sides by 2
y = 4
Use this y value to find x
x = 2y
x = 2*4
x = 8
So we have x = 8 and y = 4 pair together to get the answer (x,y) = (8, 4) which is choice A.
Let umber of hours in which snowfalls of the both towns become equal = x
Given that rate at which snow depth is increasing in town 1 =
inches per hour
Then amount of snow fall in x hours in twon 1 = 
Given that rate at which snow depth is increasing in town 2 =
inches per hour
Then amount of snow fall in x hours in twon 2 = 
when snow fall becomes equal then we get equation:
0=x
Hence final answer is 0 hours.
12 l = 12000 cm3 = x * 30 * 50 => x = 12000/1500 = 8 cm;
