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 : 6220 lb/ft2

y=

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=

y=

y = -0.585 + 20.625 + 6200 = 6220.04

6220 lb/ft2 is the amount of sugar produced.

the answer is 200

step-by-step explanation:

the way the question is worded, it seems to imply the $264 interest is simple interest, not compound interest.

the simple interest for 2 years is $264; the simple interest for 1 year is $132.

$132 interest on a $600 investment means an interest rate of (132/600)*100 = 22%.

the value of $200 at 22% interest compounded annually for three years is

200%281.22%29%5e3

the amount of interest is that value, minus the original $200.

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square