What values make the equation 7/6z+1/3=-5/6 true; z=-1, z=2, z=1, or z=-36/63

Acollege is planning to construct a rectangular parking lot on land bordered on one side by a highway. the plan is to use 680 feet of fencing to fence off the other three sides. what dimensions should the lot have if the enclosed area is to be a maximum?

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

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4