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24 March, 19:08

Two more than four times the sum of yesterday's high temperatures in degrees Fahrenheit and 7 is equal to the current temperature in degrees Fahrenheit.

a. Write an expression for the current temperature using t as yesterday's high temperature in your expression.

b. simplify the expression

c. if yesterday's high temperature was 3 degrees Fahrenheit, what is the current temperature?

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  1. 24 March, 22:14
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    4 (t + 7) + 2 < = = current temp expression

    4t + 28 + 2 =

    4t + 30 < = = = simplified

    if yesterdays high temp is 3 ...

    4t + 30 =

    4 (3) + 30 =

    12 + 30 =

    42 Fahrenheit < = = = current temp
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