7 At a local garden shop the price of plants includes sales tax The cost of 4 large plants and 8 medium plants is 40 The cost of 5 large plants and 2 medium plants is 28 a Ifl is the cost of a large plant and m is the cost of a medium plant write a system of equations that models this situation b Could the cost of one large plant be 5 50 and the cost of one medium plant be 2 25 Justify