Answer:
k=30
Step-by-step explanation:
The number of mice vary inversely with cats. This is written as:
When there are 3r-19 cats, there are 2r+1 mice
When there are 6r-27 mice, there are r-5 cats.
Taking the values of k above, we have:
Therefore:
Answer:
87.5%
Step-by-step explanation:
Answer:
The answer would be 21.248 miles
4x-4+15+180-5x=180
4x+11-5x=0
X=11
Answer:
Step-by-step explanation:
Let x represent the amount of medical bills that Giselle has to pay.
Assume she has over $160 in bills,
it means that
x > 160
Under plan A, Giselle would have to pay the first $110 of her medical bills, plus 35% of the rest. Therefore, she will have to pay for
35/100 × (x - 110) = 0.35(x - 110)
Under plan B, Giselle would pay the first $160, but only 20% of the rest. Therefore, she will have to pay for
20/100 × (x - 160) = 0.2(x - 160)
Therefore, the amount of medical bills that plan B will save is
0.35(x - 110) - 0.2(x - 160) = 0.35x - 38.5 - 0.2x + 32
0.15x + 6.5
Substituting x = 160 into 0.15x + 6.5, it becomes
0.15 × 160 + 6.5 = $30.5
Total bills would be 160 + 30.5 = 190.5
Therefore, Giselle would save $30.5 with plan B if she had more than $190.5 in bills.
