7.92 + 5.37 using rounding to estimate

Rounding decimals is like rounding whole numbers. 7.92 is closer to 8 right?. Because if you take out the decimal point it would be 792. And you rounded that to 800 now put the decimal point back which is 8.00= 8. do the same thing to 5.37 and you get 5. 8+5= 13 and that is your answer. Hope this helped

if you mean

then it's c. 8, -7/3

but if you mean

then it is

a. the residual plot for model 1 has a random pattern and is a good fit for the data.