Andrew spent $80 on travel last month. Work out the amount Andrew spent on household bills last month.

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Which data set has a greater spread? why? set a: {38, 12, 23, 48, 55, 16, 18} set b: {44, 13, 24, 12, 56} has a greater spread because .

Two planes leave an airport at the same time, one flying east, the other flying west. the eastbound plane travels 20 mph slower. they are 1600 mi apart after 2 hr. find the speed of each plane.

There are 45 questions on your math exam. you answered 810 of them correctly. how many questions did you answer correctly?