Can some one send me the Answers to this book plzz

Consider the function f(x)=−2/3x+5 . what is f(1/2) ? enter your answer, as a simplified fraction, in the box. f(1/2)=

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

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