Ewan has 48 white tiles and 16 blue tiles. The cost of each white tile is £2. The cost of each blue tile is £4.
Work out the ratio of total cost of white tiles to the total cost of the blue tiles.

The magnitude, m, of an earthquake is defined to be m=log l/s, where i is the intensity of the earthquake (measured by the amplitude of the seismograph wave) and s is the intensity of a “standard” earthquake, which is barely detectable. what is the magnitude of an earthquake that is 1,000 times more intense than a standard earthquake? use a calculator. round your answer to the nearest tenth.

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

What is the explicit formula for this sequence? -7, -4, -1, 2, a.) an = 8 + (b - 1)3 b.) an = -7 + (n - 1)3 c.) an = 3 + (n -1) (-7) d.) an = -7 + (n - )