I think the answer would be 7.5 hours or 4 hours,not so sure which one exactly
Answer:
Choices given as
and
are correct.
Step-by-step explanation:
Given expression is,

By applying law of exponents in the given expression,







Therefore, choices given as
and
are correct.
This is solved for all values of
y = -x-3. (Assuming you meant that 2x+2y=-6).