Alarge container of juice costs $1.95 less than 3 times the cost of a small container is $1.60?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

With alll of except for the 2 that i did already

Is there an x intercept in the equation 60*1.15^x