Please help I am on a quiz Which of the following functions represents the values in the table below?
a -4 -3 -2 -1
f(a) 25 16 9 4
f(a) = 4a 2 + 5
f(a) = a^2 - 2a + 1
f(a) = a^2
f(a) = a^2 - 4a - 3

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.