How to use a calculator to calculate log numbers instead of use log tables but when told to use log tables

To complete your spring schedule, you must add calculus and physics. at 9: 30, there are three calculus sections and two physics sections; while at 11: 30, there are two calculus sections and three physics sections. how many ways can you complete your schedule if your only open periods are 9: 30 and 11: 30?

Classify the following triangle check all that apply

∆red ≅ ∆ by rule will give brainiest if possible