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|y + 4| < 1
a.-5 < y < -3
b.-3 < y < 5
c.-4 < y < 1
d.1 < y < 4

|2t| - 5 + 7
a. t = 1 or -1
b. t = 6 or -6
c. t = 10 or -10
d. t = 12 or -12

|a| -3/4 = -5/8
a.1/8 or -1/8
b.7/8 or -7/8
c.1 3/8 or -1 3/8
d. no solution

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

Rockwell hardness of pins of a certain type is known to have a mean value of 50 and a standard deviation of 1.1. (round your answers to four decimal places.) (a) if the distribution is normal, what is the probability that the sample mean hardness for a random sample of 8 pins is at least 51?

What is the value of x? enter your answer in the box.