Hello, can you help me with those questions? my answers are not matching and I can't figure out where I am doin wrong. Thank you.

1)A dealer predicts that new cars will sell at the rate of4xe^0.1x

sales per week in weekx. Find the total sales in the first half year (week 0 to week 26).

2)Afterthours of work, a bank clerk can process checks at the rate ofr(t)

checks per hour for the functionr(t)

given below. How many checks will the clerk process during the first three hours (time 0 to time 3)? (I got 405 for this but it is not correct)

r(t) =t²+90t+9