Which equation has no solution?

a)4(x + 3) + 2x = 6(x + 2)
b)5 + 2(3 + 2x) = x + 3(x + 1)
c)5(x + 3) + x = 4(x + 3) + 3
d)4 + 6(2 + x) = 2(3x + 8)

Agreeting card company can produce a box of cards for $7.50. if the initial investment by the company was $50,000, how many boxes of cards must be produced before the average cost per box falls to $10.50?

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Two numbers have a sum of -19. one number is x. what expression represents the other number?