A rumor spreads exponentially through a school, so that the number of people who know it can be modelled by the equation N=Ae^kt, where t is the time, in minutes, after 9 am. When school begins at 9 am, 18 people know the rumor. By 10 am 42 people know it. Show that k=0.0141, correct to three significant figures.

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Ernest is purchasing a $175,000 home with a 30-year mortgage. he will make a $15,000 down payment. use the table below to find his monthly pmi payment.

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles