(05.05 HC) The graph shows the distance, y in miles, of a moving train from a station for a certain period of time, x, in hours: What is the speed (in miles per hour) of the train?
A. 100 mile per hour
B. 50 miles per hour
C. 150 miles per hour
D. 400 miles per hour

Cot(90° − x) = 1 the value of x that satisfies this equation is °. a. 60 b. 135 c. 225 d. 315

Alicia puts $400 in a bank account. each year the account earns 5% simple interest. how much money will be in her bank account in six months?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.