## Algebra: A Combined Approach (4th Edition)

Tallest: $230,000,000,000 = 2.3 \times 10^{11}$ Shortest: $150,000,000,000 = 1.5 \times 10^{11}$
Using eye to judge. The tallest bar is slightly greater than half-way between 200 and 250, so it is about 230 billion. $230,000,000,000 = 2.3 \times 10^{11}$ The shortest bar is touching 150 billion. $150,000,000,000 = 1.5 \times 10^{11}$