Please help me! I will give brainliest for a reasonable answer! This is a proof and I need to identify the wrong steps. However, I know the wrong steps are 2 and 6, but I don’t know a reasoning for 6. Please help me!

Please don’t send a file link!

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends more than a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Billie holiday sells children's clothing for sara vaughn's toddler shop. baby blankets sell for $29.99 after a markup rate based on cost of 109%. find the cost and the markup.

Tom travels between the two mile markers shown and then finds his average speed in miles per hour. select the three equations that represent this situation.