Slice 4z - 4.4 = 3.6

A. z=0.3
B z= -0.3
C. z= -2
D. z= 2

HELPPP

How do you solve a question like this?

An ulcer medication has 300 milligrams in 2 tablets. how many milligrams are in 3 tablets?

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.