What is the value of the expression |x| + |y + z| when x = –7, y = 8, and z = –11?

Which of the following system of equation is not equal to the system of equations is not equal to the system of equations shown below

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?