39. Find the sum of the following geometric progressions.
d) to 8 terms
e) to 5 terms
f) to 4 terms
g) to 6 terms
h) to 8 terms
40. Find the sum of each of the geometric series.
a)
b)
c)
d)
e)
f)
41. The fourth term of a G.P. is and the product of the first and third terms is . Find the sum of the first four terms.
42. An employee commences her position in a company with a starting salary of $36,000 and receives 5% increase each year for the next seven years.
a) How much does she earn in her sixth year of employment?
b) What total salary will have been paid to her during the first eight years of her employment?
43. Mariah bought a car for $42,000. After one year and two years it is worth $35,700 and $30,345. If the value of the car depreciates according to a G.P., how much it will worth after five years? When it will worth less than half the purchase price?
51. Find y if
52. Find y if
53. Find y, if
54. Find y, if
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