Select all the expressions that are equivalent to (2n+6)(n+3)
A. 2(n^2+6n+9)
B. 2n^2+6n+18
C. 2n^2+12n+18
D. 12n+18
E. 2(n+3)(n+3)
F. 2(n+3)^2

Atriangular bandana has an area of 46 square inches. the height of the triangle is 5 3 4 inches. enter and solve an equation to find the length of the base of the triangle. use b to represent the length of the base.

X+y=-4 x-y=2 use elimination with adding and subtraction

What does independent variable and dependent variable mean in math?