John is 70 years younger than shannon. shannon is 4 times as old as john. If you let s=shannon’s age and j= johns age, then the problem can be represented by a system of equations. Which of the following shows a graph of system and the solution to this problem.

Christina can paint 420 square feet in 105 minutes. which unit rate describes the scenario?

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

Find the unit rate. enter your answer as a mixed number. a fertilizer covers 2/3 square foot in 1/2 hour.