1. suppose a and b are real numbers where a > 0 and b < 0.
a. is –a + b positive or negative. explain how you know.
b. is a – b positive or negative? explain how you know.
c. is b – a positive or negative. explain how you know.

A is positive and b is negative from the info that they tell us
a. negative
a has to be negative because of the sign and b is going to be negative, so there is no way that there is going to be a positive if both are negative
b. positive
a is going to be positive because it says it in the beginning sentence it is and two negatives from the equation and b make a positive, so it is two positives
c. negative
b is negative and a is negative from the sign in the equation which make two negatives

The answer is 270 cars.you can do this by making a proportional relationship. for instance, 200 is the whole we are using, so on a “number line” 200 would be over 100%. now, since he sells 35% more, add 35% to 100% to get 135% on the other side of the “number line” on the bottom half, leaving the top half empty.cross multiply 200 by 135 then divide by 100 to get your answer. i hope this , if it did, , if you don’t mind, giving me brainiest! 200/100% } 200 • 135 /100 ? /135%