According to the wall street journal, 14,200,000 videotape copies of walt disney's fantasia have
been sold to date. write that number in scientific notation.
a. 1.42 × 10^7
b. 1.42 × 10^6
c. 142 × 1,000,000
d. 142 × 10^7

Marquise has 200 meters of fencing to build a rectangular garden. the garden's area (in square meters) as a function of the garden's width w w (in meters) is modeled by: a ( w ) = − w 2 + 1 0 0 w a(w)=−w 2 +100w what side width will produce the maximum garden area? meters