Help me with this pls

$3.17

Step-by-step explanation:

3 soft drinks at $2.50 each → 3 x $2.50 = $7.50

3 soft drinks + 3 candy bars = $16.50

$7.50 + 3 candy bars = $16.50

3 candy bars = $9.50

1 candy bar = $9.50/3 = $3.17 (3s.f.)

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25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116