I don't get solving equations with variables on both sides with word problems

Amy has a garden covering 900 square feet. a. If she wants to plant moss roses on 10% of the garden, how many square feet will moss roses cover? Write and solve a percent equation to solve this problem. b.

Nine times a number decreased by 4 yields four times the number increased by 16

What is the mode of 18, 18, 15, 18, 18, 24, 21, 21, 24, and 14?

The undefined terms line and plane are needed to precisely define which mathematical term? line segment perpendicular lines parallel lines ray

Which of the following expressions is equivalent to 4^-3? A. 1/-4^-3 B. - 4^-3 C. 1/4^3 D. 1/4^-3

He uses 6 inches of yarn per bracelet. how many bracelets can sal make with 5 feet of yarn?

If the remainder on division of x^3+2x^2+kx+3 by x-3 is 21, find the quotient and the value of k. Hence, find the zeroes of the cubic polynomial x^3+2x^2+kx-18.

What is - 2, 0, 1.7, - 5/2 in order from least to greatest?

Four multiplied by the some number equals 32

Joe and grace are baking cookies they need a total of 2 cups of sugar for the recipe joe has 11/10 cups of sugar and grace has 3/4 of a cup of sugar without solving the problem do they have enough sugar explain your thinking