Someone
what are the coordinates of the vertex of the parabola described by the equation below?
y = -4(x - 3)2 + 5
a.(3, 5)
b.(5, -3)
, -5)
, 3)

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?