Line segment AB measures 18 unit What is d, the distance between tick marks on the number line?
1 unit
2 units
3 units
9 units

Answer this question! 30 points and brainliest! only if you know the answer.

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.

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.