Question

1. Which two of the following expressions are equivalent to

6.2a - 5(1.5 – 0.6b) – 4.7a +3.1 ?

a. 06.2a - 6.5 – 5.6b - 4.7a + 3.1
b. 06.2a - 7.5 + 36 - 4.7a + 3.1
c. 06.2a + 7.5 – 36 – 4.70 + 3.1
d. 01.5a + 3b - 4.4
e. 01.5a - 5.6b - 3.4

Answer 1

B and D

Explanation:

6.2a - 5(1.5 - 0.6b) - 4.7a + 3.1

= 6.2a - 7.5 + 3b - 4.7a + 3.1

= 1.5a + 3b - 4.4

Assuming you have accidentally type a "6" instead of a "b" in answers b and c, the answer is:

B and D