COM-TECH is considering whether to apply for a grant from the government

COM-TECH is considering whether to apply for a grant from the government to use wireless technology.  If awarded the grant, COM-TECH would need to decide what type of technology (microwave, cellular or infrared) they would need to acquire equipment.  In addition to equipment cost, COM-TECH must spend money on research and development (R&D) but these costs are uncertain.  COM-TECH developed the decision tree shown below with payouts shown on the right and probabilities shown above each item. What is the expected value of branch 4 (microwave)?