Which of the following is equivalent to the expression below? 7(3+4i)
a. 10+11i
b. 21+4i
c. 10+4i
d. 21+28i

Kylie explained that (-4x+9)^2 will result in a difference of squares because (-4x+9)^2 (-4x+9)^2 =(-4x)^2+(9)^2=16x^2+81

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

The suare root of 9x plus 7 plus the square rot of 2x equall to 7