Does anyone understand these questions? i need the answers for all the questions .i need someone who is smart because i need the answers to be 100% right

If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle.he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

Rewrite 9 log, x2 in a form that does not use exponents. 9log, x = log, x