Choose the correct simplification of the expression −6x^2(4x − 7x^2 − 2)
a. 42x4 + 24x3 − 12x2
b. −42x4 + 24x3 − 12x2
c. −13x4 − 2x3 − 8x2
d. 42x4 − 24x3 + 12x2
i'm thinking it's b but not sure.

Candy lives in the center of town. her friend darlene lives 28 miles to the east and her friend dana lives 21 miles north. approximately how far do dana and darline live apart ?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

Answer! if you don’t mind, can you explain