Please answer these questions since I cannot understand how to get the answers.

1.)

Simplify the following expressions. Write in standard form where appropriate. Write only positive exponents. 12x y z a. 16ry1026 b. 4(x + 3)? = c. (3ry*2) = 5x -27025 d. 5x3y-625\f\f\fOne-third times the difference of a number and 5 is 2 , Which equation best shows this? Select an answer v One possible first step in solving the equation in the above problem is to Select an answer V The value of the number is ? vSolve the given system of linear equations. Enter solutions as an ordered pair, in the form (x, y). y = 8 09 # y= - 14 If there is one solution to this problem, then you must type your answer in the form (r, y). For example, if your solution has > = 0.1 and y = 0.2, then you must type (0.1, 0.2) O No solution O Infinite number of solutions\f10 Consider the line I with slope 9 that goes through the point ( - 6, 2). Write the equation of the line that is PARALLEL to L , through the point ( - 8, - 3) . in slope-intercept form y = me +b. . in point-slope form y - y1 = m(x - c1) . Write the equation of the line that is PERPENDICULAR to I , through the point ( - 8, - 3) . in slope-intercept form y = me +b. . in point-slope form y - y1 = m(x - 21)