exam Maths Puzzle Numerical Ability

The amount A of money on deposit for t years in an account earning simple interest is a linear function of t. Express that function as an equation if A=$124 when t=2 and A=$184 when t=5.

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A parallelogram is a quadrilateral with two pairs of parallel sides. Show that ABCD is a parallelogram if the coordinates of the vertices are A(-2,3), B(2,7), C(8,5), and D(4,1). Hello out there,I need some help with some problems,the first one is,Solve x^2+7x-8=0 by graphing.If the solutions are not exact,estimate the answers by indicating three consecutiv