Write an algebraic equation for each word phrase and solve each question.
1. the sum of y and eleven is 14
2. the product of four and x is sixteen
3. three less than m is two-hundred

It costs 4.25 for 1 pound of roast beef. how much will it cost to purchase 2.5 pounds of roast beef? round to nearest cent

Answer this question! 30 points and brainliest!

Apatient is given 50 mg dose of medicine the medicines effectiveness decreases every hour at a constant rate of 40% what is the exponential decay function that models this scenario how much medicine will be left in the patients system after 2 hours