Alyssa has fifty-quarters and dimes She has a total of $9.80
How many dimes does she have?
a.)32
b.)30
c.)20
d.)18

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