Sally wants to save for a new cell phone. She opens a bank account with $40 and adds $20 each week. Which of the following equations can be used to determine how much she has after
'W' weeks?

T = 60w
T = 40 + 20w
T= 20 + 40w
T = 40 + 20 + w

Question 5 spring semester final exam math evaluate

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Determine if this is a solution to the system