Topics Space to practice & Vide
Question 1 6:17
1.05 One-Variable Compound
Inequalities
Question 1:
Your goal this year is to earn a B or better in Algebra
class. If you do, your parents said they would give you
$200. Write an inequality to represent the grades you
can earn and receive money from your parents for it.
Then explain the graph for the inequality. Hint:
Remember you cannot earn higher than a 100 in any
class.

good luck!

cutie~

answer. d.289 hope that

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