Answer:
1. x+4x
2. 5x
3. 
4. 4x-2x+15
5. 
Step-by-step explanation:
To write expressions remember these key words:
- a number is a variable like x
- sum is +
- difference and subtracted is -
- quotient is ÷
- product is ×
- reciprocal means flip like
- square is an exponent of 2 like
1. x+4x
2. 5x
3.
Remember a quotient would be 
but the reciprocal is 
.
4. 4x-2x+15
5.
Answer:
$12
Step-by-step explanation:
The best way to do this is with a simple ratio. If you pay $3 for one meter, then for 4 meters, you’d pay $12. You BOUGHT 4 times more cord, which means you’d PAY 4 times more. Thus, 3 x 4 = 12!
Or with ratios:
1 meter : $3
multiplying both sides by 4
4 meters : $12
Answer:
1) 40
2)9x-12
3)42
Step-by-step explanation:
1) A square has 4 sides, and if one side's length is 10, the perimeter (distance around the square) is 10 times 4=40
2) Simply add these values together to get 9x-12
3) Plug in 6 as x in 9x-12. (6*9)-12=54-12=42
Answer:
3. increasing
4. decreasing
Step-by-step explanation:
well for graph 3 the values are increasing
and for graph 4 the values are decreasing
