Agroup of nine singers includes 6 altos and 3 sopranos. an instructor randomly selects one of the singers to sing the first part of a duet and a different singer to sing the second part of a duet. use a sample space to determine whether randomly selecting an alto first and randomly selecting a soprano second are independent events.

answer: hence, function will be

explanation:

since we have given that

cost of a new textbook = $85

according to question, the resale value of a textbook decreases by 25% with each previous owner,

so, our function becomes,

here, y is the total value of the text book after x owners.

hence, function will be

b segment jm is correct i think

choice b

step-by-step explanation:

f(x) = 88x^2 -264x + 300

the line of symmetry of a parabola is defined by

h = -b/2a

where ax^2 +bx+c=0

so

h = - -264/ (2*88)

h = 3/2

so x = 1.5