The figure below is a scale model of my new garden. If 1 cm2 is equal to 2 ft", what is the actual size of the garden in square feet?
numbers: (triangle type shape) 20base, 18height, (square) 6height, 10length

Given the function f(x) = log base 4(x+8) , find the value of f^-1(2)

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Jackie purchased 3 bottles of water and 2 cups of coffee for the family for $7.35. ryan bought 4 bottles of water and 1 cup of coffee for his family for 7.15. how much does each bottle of water cost? how much does each cup of coffee cost?