The graph below is the solution for which set of inequalities? 2
864
2
8X
-20
2.
4
-6
8
| 3x - y = 12
2x + y < 10
x - 2y <4
3+ y 5
2 > 0
y 0
3+ y 5
2 + y 4
<> 0
y20
2. - Y 58
20+ y<5
20
220
y0
y 0

step-by-step explanation:

just plug in each number for x and see which ones work and don't

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