What is the value of the system determinant for the following system of equations? 6x + y = 4

5x + y - 7 = 0

A. 1
B. -1
C. 31

Let w=23 . what is the value of w + 45 ?

Write an expression that represent sarah’s total pay last week.represent her hourly wage with w monday 5 tuesday 3 wednesday 0 noah hours wednesday 8 only with w wage did noah and sarah earn the same amount last week?

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?