Given the table, write an expression for the function, and describe what it does. a) y=2x. y is double x. b) y=3x. y is triple x. c) y=4x. y is 4 times x. d) y=2x+1. y is twice x plus 1.

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step-by-step explanation:

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.