Shown here mathematical step . identify the mathematical reason or property used to simplify from the first step to the second step.
7(a+13)
7a+91

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

Axel follows these steps to divide 40 by 9: start with 40. 1. divide by 9 and write down the remainder. 2. write a zero after the remainder. 3. repeat steps 1 and 2 until you have a remainder of zero. examine his work, and then complete the statements below.

If the tip varies directly with the number of guest which equation represents between the tip,t, and the number of guest,g?