Angles A and B are adjacent on a straight line. Angle A has a measure of (2r +20) and angle B has a measure of 130.. What is the measure of r? No links PLEASE ♡​

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

I’m really confused and need your assist me with this question i’ve never been taught

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3