Which phrase is equivalent to the expression (17×4)−35?

What does it mean by solve the exponential equation for x?

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Which property was used to simplify the expression? 3c+9 +4c=3c+4c+9