To find the unit rate, divide the numerator and denominator of the given rate by the denominator of the given rate
Answer:

Step-by-step explanation:



Substitute
into second equation:




Substitute
and
into the third equation:



Substitute
into
:

Plug in y and z values into
:

first, find the square root of 45. and make x normal. a square root cancels out a square. It should be 6.7x
Answer:
8
Step-by-step explanation:
4.5x+10<=50
4.5x<=50-10
4.5x<=40
x<=8.9
round down because can't go beyond 50
x=8 max