In a lab, a substance was heated by 6°C each hour for 12 hours. What was the total change in temperature?

Let w=23 . what is the value of w + 45 ?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Dakota earned $7.50 in interest in account a and $18.75 in interest in account b after 15 months. if the simple interest rate is 4% for account a and 5% for account b, which account has the greater principal? explain. to make it a little easier, there is an image. good luck!