Find the ordered pairs whose x= 3

x=2y+1

(3, 1)

Step-by-step explanation:

1. Since you are given that x=3, you know that the first number in the brackets is 3, so (3, y).

2. Now it is time to find the y-coordinate. You are given the equation x=2y+1, so use that to solve for y

3. To do so, start by substituting 3 into the equation. You will get:

x=2y+1

3=2y+1

4. Now, subtract 1 from both sides

2=2y

5. Lastly, divide both sides by 2. This will give you y=1

Therefore, the ordered pair is (3, 1)

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt