Write the phrase as an algebraic expression expression is the difference of a number and seven

Write the phrase as an algebraic expression expression "is the difference of a number and seven"

X - 7

Step-by-step explanation:

X represents any number, and X - 7 is the algebraic difference between that number and the number 7.

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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