Jose owns 40 shares of stock a whose price increased by $0.75 per share. he also owns 100 shares of stock b whose price decreased by $0.20 per share. what is the total change in the value of paul’s stock (a and b together)? !

Sanderson is having trouble with his assignment. his shown work is as follows: − 3 7 7 3 = − 3 7 × 7 3 = − 21 21 = −1 however, his answer does not match the answer that his teacher gives him. complete the description of sanderson's mistake. find the correct answer.