Can somebody help me please

Name the most appropriate metric unit for each measurement like the mass of cow

In exponential growth functions, the base of the exponent must be greater than 1,how would the function change if the base of the exponent were 1? how would the fiction change if the base of the exponent were between 0and 1

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are: