Boris received a gift card of S90 for a pizza restaurant. The restaurant charges $15 per pizza. Jane received a gift card of $110 for a different pizza restaurant. The restaurant charges $20 per pizza. Let x be the number of pizzas purchased. (a) For each card, write an expression for the amount of money left on the card after purchasing x pizzas. D=0 Amount of money left on Boris's card (in dollars) =|| Amount of money left on Jane's card (in dollars) =| (b) Write an equation to show when the two cards would have the same amount of money left on them.

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Percentage

A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.

Algebraic Expressions

In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.

Numbers

Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.

Subtraction

Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.

Addition

Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.