Which expressions are equivalent to (4 • a) • 2
Choose all that are correct
A: 4 • (a • 2)
B: 2 • (4 • a)
C: 4 • 2 • a • 2
D: 8a
E: 4 • 2 + a • 2
2nd Question:
Which statement shows the associated property of addition?
A: 21 + 2y = 2y + 21
B: If m + 3 = 18, then 18 = m + 3
C: 3 • (5 • x) = (3 • 5) • x
D: (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) - p
B: 10 • 2 - p
C: (10 • 2) • p
D: (p • 10) - (p • 2)
please help I suck at this.
