Percent increase and decrease using double number line and equations
What was the initial price of a t-shirt it, after a 25%
discount, it cost $12?
Draw a double number line to solve:
Solve the problem by setting up and solving an equation
Plz help plzpzlz

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9

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?

The room above is shaped like a rectangle and has a perimeter of 34 feet. if the room is 11 feet long, how wide is it?