The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. forty-five copies of the book weigh a total of 249 ounces. which value could replace x in the table? 40 – h 50 – h 5(45) – h 5(45 – h)the hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. forty-five copies of the book weigh a total of 249 ounces. which value could replace x in the table? 40 – h 50 – h 5(45) – h 5(45 – h)

Which compound inequality can be used to solve the inequality 3x+2 > 7? -7 < 3x+2> 7 -7> 3x+27 3x + 2 > -7 or 3x + 2 > 7 3x + 2 < -7 or 3x + 2 > 7

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)