I'm not sure what the 26 and 44 is there for but I'm guessing u want to multiply so in order to find the difference u got to multiply both sides the subtract so the answer would be 352

therefore ur answer is OPTION A 8.889 x 10-6 cm/s
Answer:
I plotted it out on the graph and here it is:
2a+4(7+5a)
Distribute 4 into 7 and 5a
2a+28+20a
Combine like terms
Final Answer: 22a+28