If f(x) = x2 − 1, and f(2a) = 35, then what is the the value of a?

This is different from the first one can someone me

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

Which of the following transformations will make coincide with ? a. counter-clockwise rotation 90º about a, followed by a translation 5 units to the right b. translation 5 units to the right, followed by a reflection across the y-axis c. translation 5 units to the right, followed by a reflection across the x-axis d. translation 1 unit up and 5 units to the right, followed by a reflection across the x-axis