Which of these is a correct compound sentence? * 1.Sally went to school, paid attention, and learned a lot.

2.I have a test today.

3.I studied fragments, run-ons, and complete sentences.

4.I studied hard, so I know I will do well on this test.

$79500

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: