1.) the transformation cos(x/5) , 9cos(x) , cos(3x) , cos(x+2) result in a horizontal compresson

2.)the transformation
1/3cos(x) , cos (x+4) , cos(-5x) , -5cos(x) result in a vertical stretch

3.)the transformation
2/7cos(x) , -3cos(x), cos(7x) , cos(x/3) results in horizontal stretch

4.)the transformation
cos(x-2) , 2/3 cos(x) , cos(4x) , 2cos (x)

In the diagram below, dab and dac are adjacent angles. if mdac = 25°, what is mdab in degrees? what is mbac in degrees?

On saturday morning, calls arrive at ticketmaster at a rate of 108 calls per hour. what is the probability of fewer than three calls in a randomly chosen minute?

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?