Solve the system of equations using substitution or elimination by addition.
x + y = 0.2
-0.5x + 0.7y = -0.94
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 0.5, 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

3-4

step-by-step explanation:

the answer is 3-4 because both 45 and 60 has a multiple of 15.

45/3=15

60/4=15

therefore the odds against selecting a red is 4-3

3

step-by-step explanation:

in standard form:

a= dictionaries

b= maps

you have to buy 3 dictionaries, so put a 3 next to the a (dictionaries) so that you can multiply them by each other.

a3+b= 60 (the amount of money you have)

we already know the cost of a=15 so replace a with $15

($15 x 3)+b=60

multiply 15 and 3 to get $45 and replace it with $45

45+b=60

and then replace b with 15 to get the total:

45+15=60

that means you have $15 left after buying 3 dictionaries.

15 divided by the cost of a map ($5) equals 3.

so you can buy 3 maps.

sorry if it was confusing!