The cost of electricity in Los Angeles is 21.5 cents per kWh. A typical freezer uses 4.5 kWh per day when operated continuously, and a typical washing machine uses 9 kWh per month. What would be the approximate cost, in dollars, of operating a washing machine and a freezer for 1 year in Los Angeles?

$34.83
$376.36
$717.89
$1,059.41

assuming you mean addition: addition and subtraction are reverse operations.

step-by-step explanation:

at home andrea has 1 2/3 kilograms of rice

step-by-step explanation:

correct answers below:

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.