HELP ME PLS I HATE MATH

i have 5 questions there in the pictures

Which expression gives the area of the triangle shown below

Aparticular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

Find the slope of the line that passes through the points (-3, -1) and (0, 3). 3/4 0 4/3