The calculation needed to find the cost of the factory tour was $5(29 students).
Melissa used the expression $5(20 9).
Mrs. Garcia used the expression $5(14 + 15).
Explain why Mrs. Garcia's method may be more difficult
to do mentally.
I

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.