SAT punctuation practice

We had coffee, cheese and crackers and grapes. -- is this the correct use of a comma?

Alex cooks his brownies with lard; they taste great. -- is the 2nd part a solo sentence?

What is the purpose of a Semicolon

In a list of words, is a comma required before the "and"? ex. today I have math, english, and _

what components make up an independent clause?

Is this sentence correct?: Washington is a beautiful state, but I prefer Oregon.

If a sentence ends in a parentheses, in what situation would the period go on the outside?

What punctuation mark belongs in the parenthesis? You were right () he did eat the whole thing.

Teddy loves stuffed bears; his collection includes 54 specimens -- is this sentence correct?

what is the definition of a contraction?

What belongs in the parenthesis? Depp is a versatile actor () but Clooney is more hunky.

It is correct to use parentheses when information is necessary for the text.

what is this word -- "fo'c's'le"

After he walked all the way home, he shut the door. -- is the comma correctly placed?

Is the commas correctly used?: I went to the store, with my friend.