F(x)=2(5x+7) find f(-2)

Find the domain and range of the following function f(x) = 51x - 21+ 4

Adeposit of 5500 at 6% for 3 years equals

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