Eleanor notices the cost of a gallon of gas is $3.85. She searches the Internet for the cost of a gallon of gas 50 years ago and finds that is was $0.89. What is the difference in costs, and why?

A The difference is $2.96 because 3.85 + 0.89 = 2.96.
B The difference is $2.96 because 3.85 − 0.89 = 2.96.
C The difference is $4.74 because 3.85 + 0.89 = 4.74.
D The difference is $4.74 because 3.85 − 0.89 = 4.74.

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?

X/y + 4y/x divided by x/y - 2y/x explain as in depth as you can how you simplfied the fractions. i don't know where to start on this : /

Complete the equation of the live through (-1,6) (7,-2)