Which of the following expressions are equivalent? 1. 6(a + 2)

2. 6a + 12

3.(2a + 4)

A). Only expressions 1 and 2 are equivalent.

B). Only expressions 1 and 3 are equivalent.

C). Only expressions 2 and 3 are equivalent.

D). Expressions 1, 2, and 3 are equivalent.

HELP QUICCK PLSSS

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

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