What is the value of the following(Please show work) 3x- 1 when x=2
2x - 3+4x when x=-1
Y^2- 6y= 9 when y = 4
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The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

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.

The quadratic function h(t)=-16.1t^2+150 choose the graph representation