You have $40 in a savings account and you deposit an equal amount into your account each week. after 8 weeks the account holds $128. write an equation that represents the amount yy (in dollars) of money in the account after xx weeks.

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

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?