Which situation below would represent a negative rate of change: John's parents put $40 on his school account for lunch. Each day he pays $3 for lunch. Let y represent the amount of money John has after x days in his school account. Judy is babysitting after school and charges $20 a day. Each day she gets paid, she puts half of what she earns in a savings account. Let y represent the amount of money Judy has in her bank account after x days.

Use the data on the dot plot to answer the question.how many people read for more than three hours last week? i'm on a unit test review

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120