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86. 1 + 3=41 + 3 + 5 = 91+3 + 5 + 7 = 161 + 3 + 5+7 + 9 = 25According to the pattern suggested by the four examples above, how many consecutive odd integers are required to give a sum of 144 ?
87. A certain 4-sided figure has the following properties.· Only one pair of opposite sides are parallel.· Only one pair of opposite sides are equal in length.· The parallel sides are not equal in length.Which of the following must be true about the sides that are equal in length?
88. There were 90 employees in a company last year. This year the number of employees increased by 10 percent. How many employees are in the company this year?