15 points and marked a brainlest i keep promises 5 mintes

which expression is equivalent to −30+(−40)+(−70) ?

a. −(30−40)+(−70)

b. −30−(40−70)

c. −30+(−70)+(−40)

d. 30+40+70

Describe the symmetry of the figure. identify lines of symmetry, if any. find the angle and the order of any rotational symmetry.

What are the soultion(s) to the quadratic equation 40- x^2=0

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.