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3 years ago

F(x) = -2x + 9, find x if f(x) = 23

Mathematics

1 answer:

JulijaS [17]3 years ago

7 0

Answer:

x = -7

Step-by-step explanation:

f(x) = -2x + 9

f(x) = 23

therefore, f(x) =

-2x + 9 = 23

-2x = 23 - 9

-2x = 14

-x = 14 ÷ 2

-x = 7

x = -7

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Tickets to a school play are $4.50 for an adult and $3.00 for a student. If 300 tickets are sold and $1087.50 collected, how man

Kryger [21]

Answer:

<h2>125 tickets for an adult</h2><h2>and 175 tickets for a student</h2>

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2 years ago

Jenny's bakery sells carrot muffins at 2 dollars each. The electricity to run the over is over 120 dollars per day and the cost

g100num [7]

Answer:

200 muffins

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If the number of muffins that Jenny sells in a day is x, then, Jenny's total cost in a day is:

120 + (1.4 * x) = 120 + 1.4x

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2 * x = 2x

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$2x = 120 + 1.4x$

Solving this:

$2x - 1.4x = 120\\\\\\0.6x = 120\\\\\\x = 120/0.6\\\\\\x = 200$

She must sell 200 muffins in a day to break even.

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3 years ago

Martha needs 28 strawberries for every 4 smoothies she makes. Complete the table using equivalent ratios.

S_A_V [24]

answer: 28: 4

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then, multiply by the number of smoothies.

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2 years ago