The reactant concentration in a zero-order reaction was 0.90…

The reactant concentration in a zero-order reaction was 0.900M after 130s and 0.350M after 335s.  What is the rate constant for this reaction? Zero-Order:                         First-Order:                         Second-Order: rate = k                                 rate = k[A]                            rate = k[A]2 [A] = -kt + [A]0                     ln[A] = -kt + ln[A]0