Which of the following expressions are equivalent to -45 +12?

What properties allow transformation to be used as a problem solving tool

Evaluate the expression for the given value of the variable 7a - 4a for a =8

Omar is going on a road trip! the car rental company offers him two types of cars. each car has a fixed price, but he also needs to consider the cost of fuel. the first car costs $90 to rent, and because of its fuel consumption rate, there's an additional cost of s0.50 per kilometer driven.