The answer is B. I hope this helped :)
Step-by-step explanation:
let no. of hours be x.
45x - 12 ≥ 117
45x ≥ 129
x ≥ 2.8667 (5sf)
therefore, 3 hours (round up to next whole number).
Topic: inequalities
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10+4x+6y because 25-15 3+1 and 16-10
Answer:


Step-by-step explanation:
Write the system


Solve by Elimination.
multiply the second equation by -3.


Add the Equations.


Plug this back in one of the equations.

