What am I supposed to add?

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

How many solutions does the nonlinear system of equations graphed bellow have?

Damon makes 20 cups of lemonade by mixing lemon juice and water. the ratio of lemon juice to water is shown in the tape diagram. lemon juice\text{lemon juice} lemon juice water\text{water} water how much lemon juice did damon use in the lemonade? cups