The radius of a circular puddle is growing at a rate of 25 cm/s. How fast is the area growing at the instant when it equals 49 square centimeters? HINT [Use the area formula to determine the radius at that instant.] (Round your answer to the nearest integer.)

the slope of the line is 60

one point on the line is (40,10)

step-by-step explanation:

in the equation outside the parenthesis the equation always tells you the slope. in this case it is 60.

in the parenthesis is also says 40 which is x because it is near the x and 10 is y because it is near y.