Solving the following system using the elimination of substitution method. 5a+3b=11
-2a+3=b
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How do you answer this question? (step by step)

Which is an equation for the nth terms of the sequence 12,15,18,21

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.