Use synthetic substitution to find the value of f(x) = -5x^4+3x^2+2x-5 when x=-2

Jack lives on a farm and has a large backyard. the area of his rectangular backyard is of a square mile. if the width of the yard is of a mile, what fraction of a mile is the length of the rectangular backyard?

For the following geometric sequence, find the recursive formula. {-80, 20, -5, } i need : ')

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?