Final answer:
The values of the given expressions are 100,000,000,000,000, 220, 2,600, and 130.
Step-by-step explanation:
a. 10^(2.5 + 13.5) = 10^16 = 100,000,000,000,000
b. (98 - 78) * 11 = 20 * 11 = 220
c. (71 + 29) * 26 = 100 * 26 = 2,600
d. (50 * 2) + (15 * 2) = 100 + 30 = 130