Consider the market for taxis (cabs) in a city. The demand and supply for cabs are given in the number of cars running on the streets. Cab drivers are individual entrepreneurs, deciding about their entry and exit to and from the market individually (there are no big cab companies). Based on this information, please, answer the following questions. 

1.In your opinion, can we say, that this market is perfectly competitive? Why? Why not? Justify your answer. (3 points)

Simplify a7/a4 a) 1/a3 b)-a/a2 c)a4/a3 d)a3

At wind speeds above 1000 centimeters per second (cm/sec), significant sand-moving events begin to occur. wind speeds below 1000 cm/sec deposit sand and wind speeds above 1000 cm/sec move sand to new locations. the cyclic nature of wind and moving sand determines the shape and location of large dunes. at a test site, the prevailing direction of the wind did not change noticeably. however, the velocity did change. fifty-nine wind speed readings gave an average velocity of x = 1075 cm/sec. based on long-term experience, σ can be assumed to be 245 cm/sec. (a) find a 95% confidence interval for the population mean wind speed at this site. (round your answers to the nearest whole number.) lower limit cm/sec upper limit cm/sec

Th perimeter of a rectangular garden is 150 feet. the length is 50 feet longer than the width, w. which equation could be used to calculate the width of the garden? a.) 2w+ 2(w-50) =150 b.) 2w+50 + 2w =150 c.) 2(w+50) + w =150 d.) 2w+ 2(w + 50) = 150 need asap. will give brainliest !