Acomputer is programmed to accept a number, add 4 to it, and then multiply the sum by 5. if x represents the number first fed into the machine, and the result of the first run is then fed back into the computer, what will the result of the second run be?
a. 5x+40
b. 5x+120
c. 25x+40
d. 25x+104
e. 25x+120

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field

How many times larger is 6 × 10^12 than 2 × 10^7? a. 30,000 b. 3,000 c. 3,000,000 d. 300,000

X-10/4 when x = –18 a 7 b –2 c –7 d 2