E^-x-3=3 round the answer to 3 decimal places

Two blends of tea are mixed to make a blend that will be sold at the fair. black tea sells for $2.20 per pound and orange pekoe tea sells for $3.00 per pound. how much of each should be used to obtain a 4lb blend selling for $2.50 per pound?

Planning for the possibility that your home might get struck by lighting and catch on fire is part of a plan for ?

Which representation has a constant of variation of -2.5