5. If x, ye{0, 1, 2, 3, 4, 5} Then, which of the following are function in the given set?
(a) f1 = {(x, y): y = x - 1}
(b) f2 = {(x, y) : x + y < 3}
(c) fs = {(x, y): x > y}
(d) fa = {(x, y) : x + y = 4}

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Asif spent $745.10 on 13 new file cabinets for his office. small file cabinets cost $43.50 and large file cabinets cost $65.95. write and solve a system of equations to find the number of small cabinets and large cabinets he purchased. determine if each statement is true or false. 1. he purchased 5 small cabinets. true or false 2. he purchased 7 large cabinets. true or false 3. he spent $527.60 on large cabinets. true or false

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!