Answer:
The possible numbers of hours Justin could rent the boat (0, 40/6]
Step-by-step explanation:
Let t represents the number of hours the boat is used,
∵ The boat costs 6 per hour,
So, the original cost of boat = 6t
Now, after getting $ 4 off
Final cost = 6t - 4
Now, final cost ≤ $ 36
Also, number of hours can not be negative
⇒ t ≥ 0
But, he must use the boat ⇒ t ≠ 0
Hence, the possible numbers of hours Justin could rent the boat,
![(0, \frac{40}{6}]](https://tex.z-dn.net/?f=%280%2C%20%5Cfrac%7B40%7D%7B6%7D%5D)
Answer:
C. $16.60
Step-by-step explanation:
Let the cost per pound of salmon be represented by x
The cost per pound of swordfish be represented by y
Melissa buys 2 1/2 pounds of salmon and 1 1/4 pounds of swordfish. She pays a total of $31.25
2.5 × x + 1.25× y = $31.25
2.5x + 1.25y = 31.25
The swordfish costs $0.20 per pound less than the salmon.
y = x - 0.20
Hence, we substitute
2.5x + 1.25y = 31.25
2.5y + 1.25(x - 0.20) = 31.25
2.5y + 1.25x - 0.25 = 31.25
2.5x + 1.25x = 31.25 + 0.25
3.75x = 31.5
x = 31.5/3.75
x = $8.4
The cost per pound of salmon be represented by x = $8.4
y = x - 0.20
y = 8.4 - 0.20
y = $8.2
The cost per pound of swordfish be represented by y = $8.2
The cost of a pound of salmon and sword fish
= $8.4 + $8.2
=$16.60
Answer:
89.43
Step-by-step explanation:
a = 670 * (1 * .25)^7
a = 670 * (.75)^7
a = 89.43
Answer:
The Answer is 2.
Step-by-step explanation:
