Answer:
A an = -3 * (1/8) ^ (n-1)
Step-by-step explanation:
We know the first term a1 = -3
And the common ratio r = 1/8 from the an = an-1 * 1/8
The explicit formula is
an = a1 r^ (n-1)
an = -3 * (1/8) ^ (n-1)
Answer:
48
Step-by-step explanation:
The consecutive numbers will be x and x + 1. Then write out the equation 2x + 1 = 99
Collect like terms
2x = 99 - 1
2x= 98
divide both sides by 2
x = 49
Price of CD before markup : 870
Markup: 870 x 0.25 = 218.75
CD + markup = 1087.75
Directly = CD x 1.25 = 1087.5
We are required to find the average change in weight each month.
The average weight lost each month is 1.4 pounds
<em>Total weight lost</em> = 3.5 pounds
<em>Number of months </em>= 2.5 months
<em>Average weight lost each month = Total weight lost / Number of months</em>
= 3.5 pounds / 2.5 months
= 1.4 pounds per month
Therefore, the average weight lost each month is 1.4 pounds
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