both 3 and 4 please . this is for matlab

Chemical reaction rates are proportional to a rate constant k that changes with temperature according to the Arrhenius equation 3. k = koeRT For a given reaction, Q=8000 cal/mol, R=1.987 cal/(mol K), and ko=1200 min. Find the value of k for a temperature of 400K. Use an fprintf command to display your final answer with 4 decimal places. The monthly payment M of a loan amount P for y years and interest rate r can be calculated by the formula: 4 Calculate the monthly payment of a $90,000 loan for 20 years and interest rate of 5.5% (r=0.055). Use an fprintf command to display your final answer with 2 decimal places