Roberto works selling cars on commission. He gets 12% commission and sold 22 cars. Three of the cars sold for $18,000 each, nine of the cars sold for $12,000 each, and ten of the cars went
for $6,000 each. Calculate his total sales income from cars, before commission. *

a)$222,000
b) $200,000
c) $228,000
d) $250,000

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

a28=58

step-by-step explanation:

a1=a1+(n-1)d

a28= 4+ (28-1)2

a28=4+(27)(2)

a28=4+54

a28=58

x=0

step-by-step explanation: