Question

1) A gardener fences in a rectangular region that is formed by adjoining a rectangle of length 38 feet and width x feet to a square measuring x feet on each side. When he does, he needs twice as much fencing as he did just for the square region. How much fencing (in ft) will he need? 2) An executive invests $23,000, some at 6% and the rest at 4% annual interest. Let x be the amount invested at 6%, in dollars. Find an expression for the amount invested at 4% in terms of x. Suppose the executive receives an annual return of $1,160. Find an equation in terms of x that describes the total annual interest earned.

          1) A gardener fences in a rectangular region that is formed by adjoining a rectangle of length 38 feet and width x feet to a square measuring x feet on each side. When he does, he needs twice as much fencing as he did just for the square region. How much fencing (in ft) will he need? 2) An executive invests $23,000, some at 6% and the rest at 4% annual interest. Let x be the amount invested at 6%, in dollars. Find an expression for the amount invested at 4% in terms of x. Suppose the executive receives an annual return of $1,160. Find an equation in terms of x that describes the total annual interest earned.

Added by Kristen T.

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