How to find if a function is positive or negative?

If f (x) is 5x-4 and g (x) is 4x+1 then what is (f-g) (x)

When Carson runs the 400 meter dash, his finishing times are normally distributed with a mean of 63 seconds and a standard deviation of 0.5 seconds.

Addition and subtraction find the missing value - 7 = ? - (-2)

A recipe takes 90minutes to make 25 percent of the time how many minutess are spent preparing

How to figure how many hundreds there are in 150,000

Britney spent $65 on a coat.$18 on food. She has $25 left. How much money did she have at first?

Joel ca drive his car 450 miles at a steady speed using 15 gallons of gasoline. make a rate table showing the number of miles his car can be driven at this speed. show 1 2 3 4 5 6 7 8 9 10 gallons of gas

71 ft/sec to m/sec.

Gloria is making teddy bears. She is making boy and girl bears. She has enough stuffing to create 50 bears. Let x represent the number of girl bears and Y represent the number of boy bears.

Tile costs $28 per square meter. how much will it cost to cover the counter top with new tile? (4.36 square meters)