David is preparing for a dance competition. He needs to practice for 13 hours in 5 days. Which of the following statements show that David is practicing according to the required rate? ASAP

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Tessa bought stock in a restaurant for $253.00. her stock is now worth $333.96. what is the percentage increase of the value of tessa's stock? a.) 81% b.) 32% c.) 24% d.) 76%