What is the value of the expression 30+[(6/3)+(3+4)]

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

Someone answer asap for ! a ball is rolled down a ramp. the height, f(x), in meters, of the ball x seconds after it is released is modeled by the function f(x) = x²- 10x + 25 for all values of x from 0 to 5. which statement about the ball is true? a. the maximum height of the ball is 5 meters b. the height of the ball increases from 0 to 5 meters above the ground. c. the ball has traveled 5 meters when it reaches the bottom of the ramp. d. the ball has been traveling for 5 seconds when it reaches the bottom of the ramp