Find the center and radius of the circle defined by the equation given below.​ x2+2x+y2+10y=15

A center: (−1, −5), radius: 15−−√

B center: (1, 5), radius: 15−−√

C center: (−1, −5), radius: 41−−√

D center: (1, 5), radius: 41−−√

Solve the following inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

A50% increase followed by 33 1/2% decrease

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