What is a variable whose value is less than zero?

Which of the functions graphed below has a removable discontinuity?

Write the equations in logarithmic form 10^3=1,000

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.