What is the y-coordinate of the solution to the system of equations? 5x + 8y = 16 6x – 2y = 54

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

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

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?