Which is a better deal? 5 pens for $1.85 OR 8 pens for $3.12 ? find the unit rate

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

Write the expression as a single natural logarithm. 2 in a - 4 in y

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?