Two balls are tossed in the air at the same time. The graph of y=h1(t) is shown where h1(t) is the height of ball 1 , in feet, t seconds after it is tossed. The height of ball 2 can be modeled by the function h2(t)=−16t2+40t+4 where h2(t) is the height of ball 2 , in feet, t seconds after it is tossed.

its 4 because 2 times 2 is 4, if you double the number two you get four

where did you get them? if you picked from the grass, is is probably poisonous.

step-by-step explanation:

the answer would be d.

step-by-step explanation:

move all variables to the left side and all constants to the right side

(x−3)^2+(y−1)^2=16

this is the form of a circle. use this form to determine the center and radius of the circle.

( x − h ) 2 + ( y − k ) 2 = r 2

match the values in this circle to those of the standard form. the variable   r   represents the radius of the circle,   h   represents the x-offset from the origin, and   k   represents the y-offset from origin.

r = 4

h = 3

k = 1

the center of the circle is found at   ( h , k ) .

center:   ( 3 , 1 )

these values represent the important values for graphing and analyzing a circle.

center:   ( 3 , 1 ).

radius:   4