How do you decide which rational number operations to use to solve problems.

Plzzz i beg u so much asaaaap ! what is the slope of this line? enter your answer in the box.

Evaluate the expression for the given value of the variable 2×(c2-5) for c=4

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.