Who ever answers first gets brainlest

answer:

A:  

B:   9 altos

Step-by-step explanation:

A: The ratio of altos to sopranos he needs to hire is 3:2, which means that a:s=3:2(This is the same as )

B: You know that he needs to hire 3 altos for every 2 sopranos, which means that if he hires 6 sopranos he will need to hire 9 altos

3 altos > 2 sopranos

x altos > 9 sopranos

3*9=2x

18=2x

x=9

answer:

A:

a/s = 3/2

B:

9 Altos

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!