The area, A, of a square is a function of the length, x, of a side of the square. Which of the following expresses this function, A(x), and the value at x = 2.5 cm? 1. a(x)=x^2; 6.25cm^2
2. a(x)=4x^2; 25cm^2
3. a(x)=2x; 5cm^2
4. a(x)=4x; 10cm^2

Which matrix multiplication is possible?

Antonio made a scale model of a building. the model's scale is 1 inch to 235 feet and its height is 3.5 inches. what is the exact height of the actual building? enter your answer in the box.

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