Answer:
In this option B is correct
Answer: The system of inequalities would be,
x + y ≤ 130, x > 0.25y, x ≥ 0, y ≥0
Step-by-step explanation:
Here, x represents the amount to be planted in tomatoes and y represents the amount to be planted in cucumbers, ( in square ft )
Thus, the total area required ( in square ft )= x + y
Since, the available area = 130 ft²,
⇒ Total area ≤ 130 ft²
⇒ x + y ≤ 130,
∵ the area planted with tomatoes to be more than 25% of the area planet with cucumbers,
⇒ x > 25% of y
⇒ x > 0.25y
Also, area can not be negative,
⇒ x ≥ 0, y ≥ 0
a) The function that represent this situation is y = 90 + 8x.
b) His weight be after 8 weeks is 154 lbs.
<u>Step-by-step explanation:</u>
It is given that,
- He started at 90 kilograms.
- And gained weight at a constant rate of 8 lbs a week.
a) Write a function to represent this situation. Use x and y as your variables.
- Let 'x' be the number of weeks he gained weight.
- Let 'y' be the total weight.
Hence the equation can be framed as,
Total weight = starting weight + weight gained in x weeks.
We know that, each week he gains 8 lbs. Therefore, for 8 weeks he gained 8x lbs of weight.
⇒ y = 90 + 8x.
∴ The function that represent this situation is y = 90 + 8x.
b) What would his weight be after 8 weeks?
To find his week after 8 weeks, substitute x=8 in the function y = 90 + 8x.
⇒ 90 + 8(8)
⇒ 90 + 64
⇒ 154 lbs.
∴ His weight be after 8 weeks is 154 lbs.
Answer:
52y
Step-by-step explanation:
36+16=52
Answer:
Then, it costs $2120 to order 1000 pens and 2000 notebooks.
Step-by-step explanation:
The Students' Union needs to order 1000 pens and 2000 notebooks. The price per pen when buying 1000 of them is 60c. The price per notebook when buying 2000 of them is 76c.
Then the total of money needed to order 1000 pens and 2000 notebooks is:
Total Money = 1000 × 0.60 + 2000 × 0.76 = $2120
Then, it costs $2120 to order 1000 pens and 2000 notebooks.