H=-16t^2+48t+4 what will the height be after 2. seconnds

What is the celsius temperature that is equal to 94 degrees fahrenheit using the formula f=9/5 c+32

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%.

From the beginning of the day the temperature rose 15 degrees so that by 4 pm it was 87 degrees. what was the temperature at the start of the day