180°=2x+10x+12
180=12x+12
168=12x
x=14
angle J=2x
J=2(14)
J=24
angle K=10x+12
K=10(14)+12
K=140+12
K=152
therefore, answer is C.
Answer:

Step-by-step explanation:

We know that 3^4 = 81. So :



Here both the Right hand side & Left hand side has same base i.e. have 3 as base in both the sides.
So , eliminating the base gives :-

She would have to get 78.75 dollars every week to get the camera.