Solve the following exponential equation. Express irrational solutions in exact form and as a decimal rounded to three decimal places: 7(2x) + 7(x+1) - 60=0
a. x = 1.000 or x = -2.098
b. x = 1.000 or x ≈ -2.098
c. x = 1.000 or x ≈ -2.098
d. x = 1.000 or x = -2.098