. What is the purpose of parentheses in a two-step problem?
Parentheses tell you to multiply first.
Parentheses tell you to do the operation with the largest numbers.
Parentheses tell you to add first.
Parentheses tell you what operation to do first.

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

The approximate line of best fit for the given data points, y = −2x − 2, is shown on the graph. which is the residual value when x = –2? a)–2 b)–1 c)1 d)2

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