Catherine found that as she increases the price of a chocolate bar, the number of sales per week decreased.

week - number of sales
1 - 149
2 - 143
3 - 137
4 - 131
5 - 125

a. write a formula for the arithmatic sequence that represents the number of sales per week.

b. exlain how you could use the information to predict the number of sales for the eighth week.

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?