OH NO OH NO OH NO OH OH N I NEED HELP WITH MY MATH HW SO HELPP ALSO SHOW YOUR WORK 1 ) Use the expression below to answer parts (a) and (b) 5x-3x-4y+ 1/3 (6x-12y)

ANSWER THESE QUESTIONS !!!

a) Simplify the expression by combining like terms. (SHOW YOUR WORK.) 5x-3x-4y+ 1/3 (6x-12y)

b) Express the answer from part (a) as an equivalent expression in factored form. 5x-3x-4y+ 1/3 (6x-12y)

c) In the space below PROVE how you know your expressions are equivalent to the original expression. 5x-3x-4y+ 1/3 (6x-12y)

First, let's check the amount of power consumed by each of the appliances for 10 hours. the calculated values are shown below.

dryer = (4000 watts per hour) (10 hours) = 4 watts or 40 kw
heater = (1500 watts per hour)(10 hours) = 15000 watts or 15 kw
radio = (40 watts per hour)(10 hours) = 400 watts or 0.40 kw

now, adding the total consumed by the three appliances for 10 hours, we have

total = 40 + 15 + 0.40 = 55.40 kw

since we now have the  total power consumed, and given that electricity costs 4.30 cents per kwh, we have

cost = 55.40(4.30) = 238.22 cents 

rounding off the cost to the nearest cents, we have a total amount of 238 cents for the total electricity cost.

answer: 238 cents