What mistake did this student make? 1. The 2nd equation should have been added to the 1st equation, not subtracted

2. The 2nd equation should have been multiplied by 3

3. The 1st equation should have been multiplied by 2

4. Neither equation is in standard form

How do i put 3(x+7) in distributive property

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

What is the approximate value of the correlation coefficient for the given graph? a. 1 b. 5 c. 3 d. -1