The function f(x)=-3cos(3x+pie/4) has
a)amplitude 3 and period 2pie/3
b)amplitude 3 and period 4pie
c)amplitude 3 and period pie
d)amplitude 3 and period 2pie

Hannah is 3 years older than twice her brother joey’s age. joey is 2 years old. how old is hannah? show all of your work! the number of students is five more than seven times the number of teachers. there are 10 teachers. how many students are there? be sure to show all of your work!

What is the result of adding the system of equations? 2x+y=4 3x-y=6

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236