Annie estimates that a bookcase is 78.25 inches .the actual height is 75.50 inches to the nearest tenth of a percent , what is the percent error in annie's estimate

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Erinn wrote the equation –5x + 4y = 32 to represent her hourly wage (y) and how this wage has changed during each year that she worked at a company (x). what is the rate of change in erinn's hourly wage per year?

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.