For what value of x is 1/2 x = -9

x = 18
x= -4
x=-18
x= -36

x = -18

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other.

Multiply 2 to both sides:

(x/2) * 2 = (-9) * 2

x = -9 * 2

x = -18

x = -18 is your answer.

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13

step-by-step explanation:

divide the cost of the total of sodas you bought by the cost of one soda, for example:

$24.57 divided by $1.89 is 13 which means you bought 13 sodas

y=3n + 1

step-by-step explanation:

this is wrong because it says the second number is one less and i added one instead