Which expression has a value of 6, using only four 4s and any of the following: + , – , · , ÷, exponents, and/or parentheses? a. (4 + 4 + 4) ÷ 4 b. (4 · 4) – (4 + 4) c. (4 + 4) ÷ 4 + 4 d. 44 ÷ (4 · 4)

Awater holding tank measures 105 m long, 50 m wide, and 8 m deep. traces of mercury have been found in the tank, with a concen- tration of 60 mg/l. what is the total mass of mercury in the tank? answer in units of kg.

What is the difference between the equations of a vertical and a horizontal line?

Sue's average score for three bowling games was 162. in the second game, sue scored 10 less than in the first game. in the third game, she scored 13 less than in the second game. what was her score in the first game?