L2.1-2.2 Formative Quiz

 $-4\left(-2\right)\left(-3\right)$  Solve

You have $1000 in a bank account. You pay a $70 electricity bill each month, using this account. The balance in the account is given by $1000+\left(-70t\right)$ , where t is the time in months. What is the balance of the account after 3 months?

 $-16\div\left(-4\right)$  

Solve

 $\frac{45}{-5}$  

Evaluate the expression when $x=10,\ y=-2,\ z=-5$  . 
 $\left|\frac{xz}{-y}\right|$  

You play a video game for 25 minutes. You lose 150 points. What is the mean change in points per minute?

(Write your answer as an integer.)