How to make 20 using the number 3,5,6,3 add

The sum of two numbers is 12 and their difference is 18 what are the two numbers

Which of the following describes the graph of y--4x-36 compared to the parent square root function? stretched by a factor of 2, reflected over the x-axis, and translated 9 units right stretched by a factor of 2, reflected over the x-axis, and translated 9 units left stretched by a factor of 2, reflected over the y-axis, and translated 9 units right stretched by a factor of 2, reflected over the y-axis, and translated 9 units left save and exit next submit

The function show two sisters' savings account and the rate at which they plan to deposit money