The following table shows the crude steel production in the​ USA, in millions of metric tons. 1980 0 80
1985 5 90
1991 11 91

​(A) Find a quadratic function ​f(x) that fits the​ data, where x represents the number of years after 1980.
​f(x) X^2+20833x+80
nothingxx80.
​(Round to three decimal places as​ needed.)

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

overpriced

step-by-step explanation:

the radius is 2 times the diameter.

step-by-step explanation: