At an online store, each purchase earns the same number of points (called reward points). David has made 4 purchases and has earned 9.6 points. (a) Let \( n \) be the number of points earned with each purchase. Write an equation that can be used to find \( n \). First choose an appropriate form. Then fill in the blanks with the letter \( n \) and the numbers 4 and 9.6 . \( \square+\square=\square \) (b) Solve your equation for \( n \) to find the number of points earned with each purchase. \( \square \)

A nurse is preparing to administer tobramycin \( 4 \mathrm{mg} / \mathrm{kg} / \) day IM divided in three equal doses to a client who weighs 60 kg . Available is tobramycin \( 40 \mathrm{mg} / \mathrm{mL} \). How many mL should the nurse administer per dose? (Round the answer to the whole number. Use a leading zero if it applies. Do not use a trailing zero.)

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.)

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

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

\( 25+|(-9)-(-7)||| \)