I need serious help with this

The price of a coat increased from $78 to $92. what is the price increase percentage?

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

How do the definitions, properties, and postulates you've learned about line segments, parallel lines, and angles to define the shapes of polygons