Last year Bob biked 322 miles. This year, he biked d miles. Using d, Write an expression for the total number of miles he biked

If 20% of a number is 35, what is 50% of that number?

Afarm that has 4 x 10^2 acres has 1.2 x 10^5 cattle. what is the average number of cattle per acre? write the answer in scientific notation. answere asap

X+ y = 5 ; x - y =3 solve using linear combination