The price of 9-volt batteries is increasing according to the function below, where t is years after january 1, 1980. during what year will the price reach $4? use formula p(t)=1.1*e^0.047t a.)2007 b.)2005 c.)2003 d.)2009

Express the following as a function of a single angle, cos(60) cos(-20) - sin(60) sin(-20)

Use the x-intercept method to find all real solutions of the equation. x^3-10x^2+27x-18=0

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?