When josh babysits, he charges a flat fee of $4 plus an hourly rate of r dollars. josh worked 4 hours at his last job. the equation below represents the amount josh earned.

James purchased a $205,000 home with a 30-year mortgage at 5.78%. if makes a $1500 monthly mortgage payment, how many months early will he pay off his mortgage? a. 180 months b. 224 months c. 127 months d. 136 months

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

Solve the system of equations. y= 2x y= x^2 - 15