There is a value of a such that subtracting a-4 from 4a+16 gives an answer of -25. what is that value of a?

Lines f and g are cut by the transversal d. the measure of 1 = 2x + 35 and the measure of 8 = 10x - 85. what value of x will show that lines f and g are parallel? a. 19 b. 26 c. 18 d. 15