A motorboat averages 15 mi/h traveling to its destination going with the river's current and 10 mi/h
going against the current on the return trip. What is the boat's average speed for the entire trip?

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Write an expression that has three terms and simplifies to 4x - 7. identify the coefficient(s) and constant(s) in your expression

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second