For Exercises 29-48, use a variation model to solve for the unknown value. The amount of simple interest owed on a loan varies jointly as the amount of principal borrowed and the amount of time the money is borrowed. If $4000 in principal results in $480 in interest in 2 yr, determine how much interest will be owed on $6000 in 4 yr.
For Exercises 29-48, use a variation model to solve for the unknown value. The amount of simple interest owed on a loan varies jointly as the amount of principal borrowed and the amount of time the money is borrowed. If $4000 in principal results in $480 in interest in 2 yr, determine how much interest will be owed on $6000 in 4 yr.
Solution Summary: The author calculates the interest owed on 6000, if it varies jointly as the principal borrowed and the amount of time the money is invested.
For Exercises 29-48, use a variation model to solve for the unknown value.
The amount of simple interest owed on a loan varies jointly as the amount of principal borrowed and the amount of time the money is borrowed. If
$4000
in principal results in
$480
in interest in 2 yr, determine how much interest will be owed on
$6000
in 4 yr.
8. For x>_1, the continuous function g is decreasing and positive. A portion of the graph of g is shown above. For n>_1, the nth term of the series summation from n=1 to infinity a_n is defined by a_n=g(n). If intergral 1 to infinity g(x)dx converges to 8, which of the following could be true? A) summation n=1 to infinity a_n = 6. B) summation n=1 to infinity a_n =8. C) summation n=1 to infinity a_n = 10. D) summation n=1 to infinity a_n diverges.
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13: If the perimeter of a square is shrinking at a rate of 8 inches per second, find the rate at which its area is changing when its area is 25 square inches.
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11: A rectangle has a base that is growing at a rate of 3 inches per second and a height that is shrinking at a rate of one inch per second. When the base is 12 inches and the height is 5 inches, at what rate is the area of the rectangle changing?
A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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