15. Which equation would be used to find the vertical distance between the points (12, -1) and (12, 7)? d = 12 - 71
d=1-1+71
d=1-1 - 12
d=1-1-71

Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.

Can someone me with this? i’m not sure what to put for my equations.