Irene thinks she has space for a 45-inch -wide bookcase. it turns out that she only has space for a 40-inch-wide bookcase. what the percent error in irene's measurements?

What is the slope of the equation y =

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (-4, 0) and (6,0). the y-intercept of thefirst parabola is (0, –12). the y-intercept of the second parabola is (0-24). what is the positive difference between the avalues for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth.