Matthew wants to sell laptops and smartphones. He wants to sell at least 15 total devices and earn at least $4,800.L+S2 15 represents the number of laptops L and smartphones S Matthew should sell to achieve his goal of selling at least 15 devices.425L+125S>4, 800 represents the number of laptops and smartphones he can sell to earn at least $4,800.If Matthew is only able to sell 4 laptops, the minimum number of smartphones must he sell in order to meet both of his goals is