If a rock falls from a height of 40 meters on earth, the height h (in meters) after x seconds is approximately h(x) = 40 - 4.9 x^2 when does the rock strike the ground? in seconds?

The suare root of 9x plus 7 plus the square rot of 2x equall to 7

Sample response: if the graph passes the horizontaline test, then the function is one to one. functions that are one to one have inverses that a therefore, the inverse is a hinction compare your response to the sample response above. what did you include in your explanation? a reference to the horizontal-line test d a statement that the function is one-to-one the conclusion that the inverse is a function done

Suppose a gym membership has an initial enrollment fee of $75 and then a fee of $29 a month. which equation models the cost, c, of the gym membership for m months?