How does a volcano form?

magma repeatedly comes up from beneath the surface and solidifies into igneous rock.

lava comes up from beneath the surface and solidifies into metamorphic rock.

magma at the surface hardens into metamorphic rock.

lava comes up from beneath the surface and hardens into igneous rock.

If f(x) = x+8 and g(x) = 4x- 3, find (f+g)(x)

Which option identifies how kevin should proceed in the following scenario? four years ago kevin designed an mp3 player for young children. now that technology has changed, he would like to update his design to ensure that it encompasses cutting-edge techniques. by creating a third-angle projection of his ideas by designing an isometric projection of his new ideas by referring to past designs and illustrations of his original model by conferring with engineers who have improved upon similar devices

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?