Each chair in an auditorium is 1.8 feet wide. If there are 24 chairs in each row, about how long is a row?

24 feet
30 feet
48 feet
60 feet

48 feet

Step-by-step explanation:

1.8 feet * 24 chairs = 43.2 feet in a row (with no spaces between chairs)

48 is the closest given answer

answer: expected value of x = 1.0

step-by-step explanation:

p(x=0) = 0.25

p(x=1) = 0.50

p(x=2) = 0.25

expected value for x = 0×0.25 + 1×0.5 + 2×0.25 = 1.0

step-by-step explanation:

f(x)=2x^2 -1 

translation is a function transformation that transform the function in a way of translating. by translating the function its graph is moved  up an down. moving the function f(x) 2 units to the left will be the new function g(x) with the equation: g(x)=f(x+2)=2(x+2)^2 -1