4. the specific heat of aluminum is 0.902 j/g. if a metal smith has 300g of aluminum and wants to melt it down to make a lock. he increases the temperature from 20 to 200. how much heat does he need to apply?

The graph shows the distance y, in inches, a pendulum moves to the right (positive displacement) and to the left (negative displacement), for a given number of seconds x. how many seconds are required for the pendulum to move from its resting position and return? enter your answer in the box.

Ahome improvement store rents it’s delivery truck for $19 for the first 75 minutes and $4.75 for each additional 1/4 hour. if a customer rented the truck at 11: 10 am and returned the truck at 1: 40 pm the same day, what would his rental cost be?

Which is f(5) for the function –2x2 + 2x - 3?