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A =39 ft^2

Step-by-step explanation:

The area of the triangle is given by

A = 1/2 bh  where b is the base and h is the height

The base is 5+8  and the height is 6

A = 1/2(5+8) *6

A = 1/2 *13*6

A =39 ft^2

unpaid balance is : $149.99-$50 = $99.99 new balance = 149.99+2.62-50 = $102.61 finance charge = 99.99- 0.21/12= $1.75 new balance = 99.99+1.75 = $101.74 average daily balance method average daily balance= 3399.70/30 = $113.32 finance charge = $ 0.21/12ă—113.32 = $1.98 new balance = $149.99-50+1.98 = $101.97

8

step-by-step explanation: