1. -1
2. -2
3. -12
4. 7
5. -4
5(a - 2b) - 3(a - 2b) |use distributive property: a(b - c) = ab - ac
= 5a - 10b - 3a + 6b
= (5a - 3a) + (-10b + 6b)
= 2a - 4b
Amy can estimate with 10% instead, so she can just simply move the decimal point of $9.11 to the right, and so it will be estimated to more than 91 cents.
The greatest common factor 9 and 27 is 9.
The factors of 9 are 9, 3, 1. The factors of 27 are 27, 9, 3,
