An Xbox is $399.79, if the sales tax is 5%.
a. Find the amount of
sales tax
b. Find the total amount
paid

What is the average rate of change for this function for the interval from x=2 to x=4 ?

The base of a triangle exceeds the height by 7 centimeters. if the area is 400 square centimeters, find the length of the base and the height of the triangle.

Maria found the least common multiple of 6 and 15. her work is shown below. multiples of 6: 6, 12, 18, 24, 30, 36, 42, 48, 54, 60, . . multiples of 15: 15, 30, 45, 60, . . the least common multiple is 60. what is maria's error?