You bought some tile that cost $4.00 per square foot and some carpet that
cost $2.00 per square foot. A total of
2500 square feet was purchased for
$6800.00. Your friend thought that
you purchased 1600 square feet of
tile, and 900 square feet of carpet.
Decide if your friend is correct. If your
friend is correct, explain why. If your
friend is not correct, explain the error
in their reasoning.

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?