5,7.5,11.25,16.875 is arithmetic or geometric

Anyone know? will mark brainliest if correct

What is the equation of the line that is parallel to the line with the equation y= -3/4x +1 and passes through the point (12,-12)

The construction of copying qpr is started below. the next step is to set the width of the compass to the length of ab. how does this step ensure that a new angle will be congruent to the original angle? by using compass take the measures of angle and draw the same arc according to it.