The inverse function in slope intercept form (mx+b) : f(x)= -5/2 x + 15

1. what is the measure of ∠abc? what is the measure of ∠abd?

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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?