Diane walks 5,000 steps each day for exercise. Over the next year, her goal is to increase the number of steps she walks each day by 10.
Let f(x) represent the number of steps Diane plans to walk on day x since beginning her goal. What does f(100)=6,000 represent?
(a) Diane plans to walk 100 steps on day 5,000 since beginning her goal.
(b) Diane plans to walk 100 steps on day 6,000 since beginning her goal.
(c) Diane plans to walk 5,000 steps on day 100 since beginning her goal.
(d) Diane plans to walk 6,000 steps on day 100 since beginning her goal.