Sandra buys 70 pencils with fuzzy tops. She gives 4 to each of her 15 classmates. The expression for the number of pencils she has left is 70 – (4 • 15) .
Answer each question to identify the parts of the expression.
1. In this expression, what does 70 represent?
3. Is the expression 70 – (4 • 15) a difference of three terms, a product of two terms, or a difference of two terms?
Identify the terms in the expression.

See explanation.

Step-by-step explanation:

In question 1, 70 represents the pencils with the fuzzy tops.

In question 2, The expression 70 - (4 × 15), is a difference in 2 terms because what you are doing first is you are multiplying 4 by 15. 4 × 15 = 60. then, subtract to get the difference. 70 - 60 = 10.

hope this helps.

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.

86

step-by-step explanation:

find the area of the triangle then multiply by 2 then add the area of the parollelegram multiplied by 2