For which intervals below is the average rate of change of m(x) = -5x-3 less than -25?
intervals

a | 3 x 5
b | 4 x 5
c | 4 x 6
a) interval a only
b) interval c only
c) intervals a and b only
d) intervals b and c only

In the given figure ar(adf) =ar(cda) and ar(cdf) = ar(cdf). show that abdc and cdfe are trapeziums.

Gh bisects fgi. find the measure of hgi •15° •21° •10° •8°

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.