Answer:
A four mile ride would cost $10
Step-by-step explanation:
Let T be the total ride cost
Let M be the amount of miles driven
T = 1.75M + 3
You can now sub in any distance in miles into the equation, but for this instance lets sub in 4 miles
T = 1.75*(4) + 3
T = 7 + 3
T = 10
Therefore, a four mile ride would cost 10 dollars
Answer:
Average call Becomes 15 minutes
Step-by-step explanation:
For Tom's Dorm to not run at a loss for switching to the new phone service the Average length of phone calls must not be less than fifteen (15) minutes.
Mathematically,
If he remains on his current phone line, a call of 15 minutes will cost :
= 0.1 * 15 = $1.5
But if he switches to the new phone line and makes a call for 15minutes, the cost will become :
First 2 minutes = 0.6 * 2 = $1.2
Subsequent 13 minutes will cost = 0.02 * 13 = 0.26
Total call for 15minutes on the new phone line = 1.2 + 0.26 = 1.46.
Since the cost became significantly lesser for 15mins when he switches to the new phone line, then the average calls Tom should make should not be less than 15 minutes.
Answer:
-5
Step-by-step explanation:
Answer:
7 1/8
Step-by-step explanation:
Convert the mixed fractions to normal fractions:
(9 * 4) + 2 = 38
(1 * 3) + 1 = 4
38/4 ÷ 4/3
Reduce it down as much as possible:
19/4 ÷ 4/3
Apply the fractions formula for division:
a / b ÷ c / d = a * d / b * c
19 * 3 / 2 * 4
57 / 8
Simplify:
7 1/8
