Solve the system of equations using substitution or elimination by addition.
x + y = 0.5
0.7x + 0.6y = 0.31
select the correct choice below and if necessary, fill in the answer box to complete your choice.
a. the solution is (type an ordered pair.)
b. there are infinitely many solutions.
c. there is no solution.

A. The unique solution to the system is

Step-by-step explanation:

 You can follow these steps to solve the system of equation by the Elimination Method:

- Multiply the first equation by -0.7, then add both equations and solve for "y":

- Substitute the value of "y" into any original equation to find the value of "x". Then:

 Therefore, the unique solution to the system is

bottom left

step-by-step explanation:

the x's and the y's both go up the same amount each time, therefore it will be a linear function because it will go in a straight line when drawn on a graph.

hope this !

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later