which investment produces a $40 daily profit for a game shop earning $2 profit from every game sold?

a. vehicle with $120 daily operating cost, delivering 80 games per day
b. inventory software with $10 daily operating cost, saving 30 games per day from theft
c. game cleaning system with $5 daily operating cost, increasing sales by 15 games per day
d. electronic billboard with $20 daily operating cost, increasing sales by 20 games per day

With these: 18/36 = 1/? missing number change 1 5/8 to improper fraction. change 19/5 to a mixed number.

Triangle xyz has vertices x(1,3), y(0,0)

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?