Which statements show equivalent expressions? Select all that are correct.

16n - 2 + 9n = 2 (8n -- 2) + 9n

6 +26+62 +262 = 362 + 36

6x (2x – 5) = 12x2 – 30x

4m + 11 – 7m +3m + 3 = 14m + 14

5 (3 – 2y) = 15 – 2y

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.

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?