19 x (42 + 58) or 19*(42 + 58) is the expression she can use. You factor out the common term 19. The distributive rule says that we can multiply the outer 19 with each term inside to get the original expression again.
Subtract 45 on both sides of the equation, then divide both sides of the equation by 2. Your answer should end up being e=-15
Just divide them and see which one gives you 60.
300 / 6 = 50
300 / 5 = 60
240 / 6 = 40
240 / 5 = 48
Therefore B has a unit rate of 60 MPH.
2(2x + 1)
= 2 * 2x + 2
= 4x + 2
So, in conclusion, the answer to this question is a) 2 * 2x + 2
