X: 4 units of a and 5 units of b per hour
y: 3 units of a and 10 units of b per hour
cost to run machine x: $22/hr
cost to run machine y: $25/hr
x=number of hours machine x runs
y=number of hours machine y runs

i do not know the answer

step-by-step explanation:

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

the diver is 33 feet below the surface.

step-by-step explanation:

hope this