Yesterday karen went on a bike ride. her average speed was 10 mph. today she went on another ride this time averaging 12 mph. in the two days she biked for a combined total time of nine hours let xp the number of hours. let x be the number of hours she biked yesterday. write an expression for the combined total number of hours she biked in two days
because there is no graph, i will just tell you how many years it should take, and you can probably figure it out from there. to start, let's [get out a calculator] find out what 2% of 250 is. this is 5, so we can add 5. notice that adding 5 to the number does not change 2% of it by much, only by 5/50 or 0.1. so, we can keep adding until we get above 282, which should take 285 minus 250 over 5 times, or 7. so, the answer is 7 years. you can [get out a calculator] and find out that it is indeed 7 years.
from equation (2)
collect the like terms