In many cases, companies that enter a market after innovative products have been introduced can achieve long-term competitive advantages by continuing to develop a better mousetrap. for example, visicalc was the first company to introduce a desktop spreadsheet program, but lotus notes cornered a large market share when it introduced the 1-2-3 program. today, however, microsoft’s excel is the dominant spreadsheet software program and has continued to endure due to the popularity of the microsoft office suite of products. visicalc possessed a advantage while microsoft enjoyed a advantage.

First-mover

Second-mover

Explanation:

A first mover is a provider of product, that achieves a market advantage by being the first type of product to be marketed. Generally, being gets the first firm in the market to get the advantage of the strong market and customer satisfaction.

The "second mover's advantage" is the value of joining others into a business or imitating an old product that a new innovative company gets.

In this case VisiCalc is a First-mover and Microsoft is a Second-mover.

b.

c.

d.

g.

those r all of them i believe

u = 30

continuing your method

= +

subtract from both sides

= - thus

= -

= ⇒ u = 30