What is the expression in scientific notation? (7 x 10−12)(4 x 105)?

Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?