Question

The equation y=−0.065x2+6.875x+6200 models the amount y of sugar (in pounds per square foot) produced where x is the amount of fertilizer (in pounds per square foot) used.

What is the best approximate for the amount of sugar produced when 3 pounds per square foot of fertilizer is used?




6200 lb/ft2

6210 lb/ft2

6220 lb/ft2

6230 lb/ft2

Answer 1

6220 is the answer for this question

Answer 2

Answer : 6220 lb/ft2

y=
`-0.065x^2+6.875x+6200`

Where y is the amount of sugar (in pounds per square foot) and

x is the amount of fertilizer (in pounds per square foot)

We need to find the amount of sugar produced when 3 pounds per square foot of fertilizer is used.

We plug in 3 for x and find out y

y=
`-0.065x^2+6.875x+6200`

y=
`-0.065(3)^2+6.875(3)+6200`

y = -0.585 + 20.625 + 6200 = 6220.04

6220 lb/ft2 is the amount of sugar produced.