Which expressions are equivalent to -90-60w? a. -30(3+2w) - 6w) • 10 c.-4(30 - 20w) d. (6+4w) x 15 e. -20(4.5 + 3w)

Select the correct answer from each drop-down menu. the length of a rectangle is 5 inches more than its width. the area of the rectangle is 50 square inches. the quadratic equation that represents this situation is the length of the rectangle is inches.

Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10

At noon a tank contained 10cm water. after several hours it contained 7cm of water. what is the percent decrease of water in the tank?