Why is the payroll calculator helpful in determining the effect of a 401k contribution on net pay? a. 401k contribution can reduce gross pay
b. 401k contributes reduce the federal tax owned
c. 401k contributions reduce the employee share of social security
d. 401k contributes can be used to reduce the cost of insurance premiums

The weight of a radioactive isotope was 96 grams at the start of an experiment. after one hour, the weight of the isotope was half of its initial weight. after two hours, the weight of the isotope was half of its weight the previous hour. if this pattern continues, which of the following graphs represents the weight of the radioactive isotope over time? a. graph w b. graph x c. graph y d. graph z