Point D (-4, 9) is rotated 90 degrees counterclockwise. Which of the following is the y- coordinate of D? a. -9
b. 4
c. -4
d. 9

Jackie purchased 3 bottles of water and 2 cups of coffee for a family for $7.35. brian 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? i need this done

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b