A local store sells boxes of pens. The cost of a box of pens and the number of pens in the box are related. You need 39 pens. Identify the independent variable in the relationship.
What is the independent variable?
A.
The cost of a box of pens
B.
The cost of each pen
C.
The number of boxes of pens you need
D.
The cost of the boxes of pens you need
E.
The number of pens in the box
F.
The number of pens you need

What is the measure of angle z in this figure? enter your answer in the box. z = ° two intersection lines. all four angles formed by the intersecting lines are labeled. clockwise, the angles are labeled 43 degrees, x degrees, y degrees, and z degrees.

Adoctor administers a drug to a 38-kg patient, using a dosage formula of 50 mg/kg/day. assume that the drug is available in a 100 mg per 5 ml suspension or in 500 mg tablets. a. how many tablets should a 38-kg patient take every four hours? b. the suspension with a drop factor of 10 ggt/ml delivers the drug intravenously to the patient over a twelve-hour period. what flow rate should be used in units of ggt/hr? a. the patient should take nothing pills every four hours. (type an integer or decimal rounded to the nearest hundredth as needed.)

Find the area of the regular hexagon if a side is 20 cm.