Rachel is 10 years older than her sister, Renee. In six years from now, the sum of their ages will be 40. How old is each girl? (Systems of Equations Word Problem)

a reflection across the x-axis , followed by the by a reflection across the y-axis , and then a scale dilation of 0.5 .

step-by-step explanation:

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a