The volume (v) of water stored in an open tank varies due to evaporation as v = xê – 50xæ + 700, where v is expressed in gallons and x is the number of months elapsed. if january corresponds to x = 0, what will the volume of water (in gallons) in the tank be in june?

What is the number 321,000,000 in scientific notation? also what is the number? ?

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?

Adecorative window is made up of a rectangle with semicircles at either end. the ratio of ad to ab is 3: 2 and ab is 30 inches. what is the ratio of the area of the rectangle to the combined area of the semicircles? possible answers: a. 2: 3 b. 3: 2 c. 6: π d. 9: π e. 30: π