A normal variable has a mean μ and a standard deviation σ. What is the probability that the value of the variable is greater than μ − σ? 80.1%, 74.1%, 90.2%, 84.1%

The axis of symmetry for the graph of the function f(x)=1/4^2+bx +10 is x=6. what is the value of b?

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

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?