The first month after opening, a hardware store had a loss of $490. The next month the store showed a profit of $310. Which expression shows the total profit for the two months? A. $490+$310
B. $490-$310
C. -$490-$310
D. -$490+310

Pls will give brainliest and all p.s u can zoom in if u cant see plss

Write the following as a base and exponent

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2