Mr. ramos drove at an average speed of 80 km/h from town a to town b. the distance from town a to b is 400 km. on the way back, he increased hid speed by 20 km/h. how much time did mr. ramos take for the return journey?

(need formula/solution .)

Examine the two-step equation. − 7 4 + x 4 = 2 which property of operations allows you to add the same constant term to both sides? amultiplication property of equality bdivision property of equality caddition property of equality dsubtraction property of equality

Last one and the bottom answer choice is y=(x-4)^2+1 you guys!

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.