A ticket to the waterpark cost $90 in May. In June, the price decreased to $63. What was the percent of the decrease in price from May to June for a ticket to the waterpark?
A 12%
B 26%
C 12.75%
D 30%

Samantha swam upstream for some distance in one hour. she then swam downstream the same river for the same distance in only 12 minutes. if the river flows at 4 mph, how fast can samantha swim in still water?

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

What is the simplified form of (3.25x10^3)(7.8x10^6) written in scientific notation?