Diesel Mechanics

[nycmathguy]

Section 1.9
Question 90

Note: Skipping Part (b)

Part (a)

y = 0.03x^2 +245.50

x = 0.03y^2 +245.50

(x - 245.50)/(0.03) = y^2

sqrt{(x - 245.50)/(0.03)} = sqrt{y^2}

sqrt{(x - 245.50)/(0.03)} = y

Correct?

Part (c)

Is this the right set up?

500 = 0.03x^2 +245.50
I must then solve for x. True?

 

[MathLover1]

Correct

 

[nycmathguy]

Correct

Very good. Humidity is back in the city. I despise the summer months.