Question

Greg has decreased his running time by 1 tenth minute each of the last six weeks. Write an expression to represent the total change in his time over the last six weeks. Then, find the total change.

Answer 1

Answer: Total change= 36 seconds.

Step-by-step explanation:

Let Greg's initial running time be t seconds.

As Greg has decreased his running time by 1 tenth minute each week.

Now, 1 tenth of minute =$\frac{1}{10}\times60=6\ seconds$

Thus In the first week, his running time = $t-6$

In the second week, his running time =$t-6-6=t-12=t-2(6)$

Similarly,

In the sixth week, his running time =$t-6(6)=t-36$

Hence, the total change in time of running = 36 seconds

Answer 2

R = -1/10x. Don't forget to rate and give me the brainliest answer! Then, I can help you with all your problems! ^-^ ~