The Shannon family owns two properties. The first property is a house and the second property is a parcel of land. The following functions represent the value of both properties, in thousands of dollars, after x years.
House: f(x) = 215(1.075) ^x
Land: g(x) = 75(1.04) ^x
Write function t that represents the total value, in thousands of dollars, of the Shannon family's two properties.