 7.13 › Unit vocabulary › Evaluating expressions › Translating expressions

 Find the equation that represents the statement, “ four more than twice a number is 18”  2n + 4 =18  2(n+4)=18  4n + 2 =18  2n + 18=4

A pack of gum costs $1.10 and a BOP magazine costs $4.95. If Jill buys 3 packs of gum and 4 BOP magazines, write a number sentence that can be used to find t, the total cost of Jill’s purchase. t=(3x1.10) + (4x4.95) t=(3+1.10) x (4+4.95)

 Which means “10 times a number minus 3 is 4”  3n-10=4  10n-3=4  10(n-3)=4  3-10n=4

 Which algebraic expression represents “ 15 less than the product of v and 4”?  v/4 -15  4v-15  15-4v  (4-15)v

 Together, Dora and Boots collected 65 pounds of magazines for recycling. If Dora collected d pounds, which of the following would find the number of pounds collected by Boots?  d+65  d-65  65-d  65d

 The algebraic expression 5x – 8 can be represented by which two verbal statements?  Five times a number x increased by 8  8 decreased by five times a number x  Five times a number x minus 8  8 less than five times a number x

 Write the algebraic expression 4s + 3 as a verbal expression › Four more than the product of s and 3 › Three more than the product of 4 and s › Four times the sum of s and 3 › Three more than four divided by a number

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 Evaluate: 12e - (-4)f when e=3 and f=5

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 Which two expressions have an answer of 12 when evaluated?  x/2 when x= 24  6x- 6 when x= -3  2x + 8 when x= -2  5x – 3 when x=3

 Evaluate 4(c-5) when c= 12

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 Which statement is NOT true?  Every equation must have an equal sign.  Every inequality has an inequality symbol.  Expressions have neither an equal sign nor an inequality symbol.  Expressions have either an equal sign or an inequality symbol.

 In order for a math statement to be an inequality, what type of symbol MUST it have? Give all of the possible examples of these symbols.

 Which statement is NOT true  36= 3x-5 is an expression  15e + 4 is an expression with 2 terms  In the expression 5g + 7x, the coefficient of x is 7  6y – 9b is an expression with two variables

Which statement is true?  7w + 8u – 7 is an expression with 3 terms  In the expression 4t – 3v, 3 is the coefficient of t  9n - 8p + 3m is an expression with 2 terms  3e – 7r is an expression with three variables