When a number is added to 1/5, the result is 24. The equation that models this problem is n + 1/5 n = 24. What is the value n?

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

Liz had 140 pens and inna had 100 pens. after inna gave liz some pens, liz had 3 times as many pens as inna. how many pens did inna give liz?

Which graph represents an exponential decay function?