79*73=5667 that is all it is you can look at the picture to see how i did my work
The answer is B, Pat collected five cars each year for seven years (There were typos but I am assuming this is what it was)
A represents 5 + 7, since he collects 5 cars and then adds 7 more the next year.
C represents 35 - 7, since he had 35 cars and then subtracted (gave away) 7 of them.
D represents 5 + 35, since he had 5 cars and then added 35 more.
The correct answer is D. Both A and B
Explanation:
Bartering is an economic system in which products are directly exchanged for other products. For example, a pound of oranges is exchanged for a pound of rice. Due to this, in bartering, there is no money or elements such as coins or bills that represent the value of products or services. This system has both advantages and disadvantages in comparison to the use of money.
In terms of disadvantages, bartering implies individuals need products or services they can use to exchange, which might not be possible for all individuals as not all individuals might produce a product or have a product other are interested in. Also, in bartering the value of products varies, for example, a pound of blueberries can be equal to a pound of rice, three pounds of rice, or even half pound of rice, as values change according to the situation of those participating in the exchange. This means, in bartering the value fluctuates and it is more difficult to agree on the value of something, which does not occur if money is used as each product has a defined price which might just vary slightly. According to this, options A and B are advantages of money over bartering.
Eg. d stands for the number of dimes, n stands for the number of nickels
a dime worth 10 cents, 1 nickel worth 5 cents
The equation for "There are 10 coins in a jar" is
d + n = 10
The equation for "The coins are worth a total of 70 cents" is
10d + 5n = 70
