Solve the equation
2x²+8x-1=0
by completing the square.
Give your answers to decimal places.

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

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2.