Which expressions are equivalent to (4 • a) • 2 choose all that are correcta: 4 • (a • 2)b: 2 • (4 • a)c: 4 • 2 • a • 2d: 8a e: 4 • 2 + a • 22nd question: which statement shows the associated property of addition? a: 21 + 2y = 2y + 21b: if m + 3 = 18, then 18 = m + 3c: 3 • (5 • x) = (3 • 5) • xd: (u + 7) + 13 = u + (7 + 13)i think its a but i'm not sure.3rd question: what is another way to write the expression p • (10 - 2) ? a: (10 • 2) - pb: 10 • 2 - pc: (10 • 2) • pd: (p • 10) - (p • 2) i suck at this.