If you add​ Natalie's age and​ Fred's age, the result is 38. If you add​ Fred's age to 4 times​ Natalie's age, the result is 80. Write and solve a system of equations to find how old Fred and Natalie are.

Complete the solution of the equation. find the value of y when x equals to 6 4x+y=20

Which is the solution to the inequality? 2 3/52 1/15 b< 3 2/15 b> 3 2/15

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