How many solutions does the nonlinear system of equations graphed below
have?

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

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Find the least common denominator for thesetvo rational expressions. n^2/n^2+4n+4 -3/n^2+7n+10