What is the solution to this system? y= 2x + 2, y= x - 1

(-3, -4)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

y = 2x + 2

y = x - 1

Step 2: Solve for x

Substitution

Substitute in y:                    2x + 2 = x - 1Isolate x terms:                    x + 2 = -1Isolate x:                              x = -3

Step 3: Solve for y

Define equation:                     y = x - 1Substitute in x:                        y = -3 - 1Subtract:                                  y = -4

Step-by-step explanation:

d,

7.70 * 3 = 23.10

because 6 goes into 18 ,times.

or 7.70+7.70+7.70 = 23.10 so D