Your neighbors are purchasing bottles of water for a backyard barbecue. They are expecting 90 guests and want to provide an average of 2 bottles of water per guest. The bottles of water are sold in packages of eighteen. Set up the problem below and calculate the number of eighteen-packs of bottles of water they will need. Place your conversion factors in order such that "guests" cancels first. 90 guests \( \times \) packages

A nurse is preparing to administer morphine 4 mg IM. Available is morphine injection \( 10 \mathrm{mg} / \mathrm{mL} \). How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

\( (-3).|(-8)-(-9)| \)

2109. Berâkna, först utan och sedan med räknare. \( \begin{array}{ll}\text { a) } 2^{4}-4^{2} & \text { c) } 10^{5}-10^{3} \\ \text { b) } 2^{5}-5^{2} & \text { d) } 3+2 \cdot 2^{3}\end{array} \)

(t) \( \frac{7}{8}-\frac{3}{4}+\frac{5}{16} \)

Jill wrote the number 40 . If her rule is add 7 , what is the fourth number in Jill's pattern? How can you check your answer?