Y= 4x - 6
2x - 3y = 8

if this problem is to be solved by substitution, which is a correct step?
a) 2x - 12x + 18 = 8
b) 2x - 12x - 18 = 8
c) 2x - 4x + 6 = 8
d) 2x + 12x + 18 = 8

Each month, a shopkeeper spends 5x + 14 dollars on rent and electricity. if he spends 3x−5 dollars on rent, how much does he spend on electricity? for which value(s) of x is the amount the shopkeeper spends on electricity less than $100? explain how you found the value(s).

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books