A football is kicked toward the goal. The height of the ball is modeled by the function h(t) = −16t2 + 64t where t equals the time in seconds and h(t) represents the height of the ball at time t seconds. What is the axis of symmetry, and what does it represent? (2 points) A. t = 2; it takes 2 seconds to reach the maximum height and 2 seconds to fall back to the ground
B. t = 2; it takes 2 seconds to reach the maximum height and 4 seconds to fall back to the ground
C. = 4; it takes 4 seconds to reach the maximum height and 4 seconds to fall back to the ground
D. t = 4; it takes 4 seconds to reach the maximum height and 8 seconds to fall back to the ground

add an !

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is