1. To get the 10% discount, a shopper must spend more than $500. Use d to represent the spending (in dollars) of a shopper who gets the discount. d > 500

2. The vehicle's fuel efficiency is no less than 30 miles per gallon.
Use f to represent the vehicle's fuel efficiency (in miles per gallon)​

step-by-step explanation:

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if the pizza is divided equally into 2 equal halves then you would get

πr^2/2

where r is the radius of the pizza.

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pls mark as brainliest

large crystals result from very slow cooling.

evaporation of water: this would produce an evaporite which is a sedimentary rock. like a salt pan in a desert. not possible to have volcanic rocks originate this way.

crystalization in molten earth: slow cooling over time. (hundreds to millions of years)

crystalization at earth's surface: this results in fast cooling. (a few hours to a few months or years)

crystalization from cooling off hot water: that would be a hydrothermal deposit. while associated with volcanics they are not volcanic rocks themselves and usually occur fairly rapidly.