What is the equation of the midline of this sinusoidal function

Write the sentence as an equation. z plus 372 is equal to 160

You are remodeling your kitchen. you’ve contacted two tiling companies who gladly told you how long it took their workers to tile of a similar size jim completed half the floor in 8 hours. pete completed half of the other floor in 7 hours. if pete can lay 20 more tiles per hour than jim, at what rate can jim lay tiles

Average acceleration: i have no idea how to do this.