Describe two different ways that you could find the product (8 x 997) using mental math. find the product and explain why your methods work. my answer (half completed): one method is to round up 997 to 1000, then multiply by 8 and subtract by 24 (8 x 3) which will give you 7976.

Abari owns 100 shares of stock a and 45 shares of stock b. for the past month, his stocks have been fluctuating inversely. stock a decreased by m cents per share and stock b increased by n cents per share. which equation can be used to find the total change in value of jabari's shares per month?