Garret is in the middle of a 20-minute bike ride. it takes 4 minutes for him to go a kilometer, so he'll end up going 5 kilometers. suppose k is the number of kilometers garret has already biked.

George is 187 cm tall. his son, ralph, is 142 cm tall. who casts the longer shadow. george when the sun is 65° above the horizon, or ralph when the sun is 56° above the horizon? how much longer? (nearest centimeter)

Which expression is equivalent to? assume x > 0 and y > 0.

Need on this one asap im almost done with this subject