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tom D. 62.5% E. 100% Last measured height of all plants-2 Current average height por part-8mn Solution The total height of all plandscurrently 19. You work for a rock-climbing gym and need to purchase 330 feet of climbing rope toate three days for an event. The online retailer SportsStuff.com charges $5.50 per yard of rope and oliers free three-day shipping. The same rope at Outdoor Haven.com costs $5.20 per yard, plus a $12.25 rush delivery fee. What is the cheapest price you can pay for the rope you need for your eym? A. $584.25 B. $572.00 C. $605.00 D. $1,728.25 E. $1,815.00

Sagot :

SOLUTION:

Step 1 :

In this question, you were meant to work for a rock-climbing gym and need to purchase 330 feet of climbing rope for three days for an event.

Recall that 330 feet = 110 yards.

The online retailer SportsStuff.com charges $5.50 per yard of rope and offers free three-day shipping.

[tex]\begin{gathered} \text{Cost function :} \\ C\text{ = 5.5 y ----- equation 1} \end{gathered}[/tex]

The same rope at Outdoor Haven.com costs $5.20 per yard, plus a $12.25 rush delivery fee.

[tex]\begin{gathered} \text{Cost function:} \\ C\text{ = 5.20 y + 12. 25 ---- equation 2 } \end{gathered}[/tex]

Step 2 :

We need to put the value of y = 110 into equations 1 and 2,

so we can know the cheapest price you can pay for the rope.

Putting the value of y = 110 into equation 1 ,

[tex]\begin{gathered} C\text{ = 5.5 y} \\ \text{when y = 110},\text{ we have that:} \\ C\text{ = 5.5 ( 110 )} \\ C\text{ = \$ 605} \end{gathered}[/tex]

Putting the value of y = 110 into equation 2 ,

[tex]\begin{gathered} C\text{ = 5. 2 y + 12. 25} \\ \text{when y = 110, we have that:} \\ C\text{ = 5. 2( 110 ) + 12. 25} \\ C\text{ = 572 + 12. 25} \\ C\text{ = \$ 584. 25} \end{gathered}[/tex]

CONCLUSION:

The cheapest price you can pay for the rope = $ 584. 25 ( OPTION A )