Julia had $80. she wants to purchase a nail paint set for $16 and earrings. she spends the rest of her money on earrings. each pair of earrings cost $8. write an inequality for the number of pairs of earrings she can purchase.

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.

If a || b and e || f , what if the value of y ?

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor