I need help The radius of a circle is 3 meters. What is the area of a sector bounded by a 180° arc?

Let w=23 . what is the value of w + 45 ?

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c