Sonji has $5. 25 in nickels and dimes. The coin value can be modeled by the equation , where d represents the number of dimes and n represents the number of nickels. If sonji has 21 dimes, how many nickels does she have? 35 42 63 105.

You want to test the hypothesis that smoking cigarettes increases the risk of lung cancer. in your experiment, you take 100 people of various ages and genders for each of your groups. one group smokes. the other group does not smoke. the group that does not smoke is called the group