An estimate height , H meters, of a tall building can be found using the formula= H=3f+ 15
where building is f floors.
A building is 85 floors high.
The real height of the building is 260m.
Work out the percentage given error when estimating the height of this building using the formula given.

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.

The price of a car has been reduced from $19,000 to $11,590. what is the percentage decrease of the price of the car?