Answer:
A. 15 mo; $875
B. 5 mo; $250
Step-by-step explanation:
A. <em>Gym fees
</em>
Let n = no. of months
<em>Community Gym</em>: Fees = 50 + 55n
<em>Workout Gym:</em> Fees = 200 + 45n
When the fees are equal,
50 + 55n = 200 + 45n Subtract 50 from each side
55n = 150 + 45n Subtract 45n from each side
10n = 150 Divide each side by 10
n = 15
<em>Community Gym</em>: Fees = 50 + 55n
Fees = 50 + 55×15
Fees = 50 + 825
Fees = $875
<em>Workout Gym</em>: Fees = 200 + 45n
Fees = 200 + 45×15
Fees = 200 + 675
Fees = $875
After 15 mo, the fees at each gym will be equal at $875.
B. <em>Computer
</em>
Option 1: Savings = 200 + 10n
Option 2: Savings = 100 + 30n
When the savings are equal,
200 + 10n = 100 + 30n Subtract 100 from each side
100 + 10n = 30n Subtract 10n from each side
100 = 20n Divide each side by 20
n = 5
<em>Option 1</em>: Savings = 200 + 10n
Savings = 200 + 10×5
Savings = 200 + 50
Savings = $250
<em>Option 2</em>: Savings = 100 + 30n
Savings = 100 + 30×5
Savings = 100 + 150
Savings = $250
After five months, the savings by either option will be equal at $250.
Answer:
jimmy cho
Step-by-step explanation:
$5.00 plus $1.25 equals $6.25 then that times 2 would equal $12.50 so his allowance was $12.50
Answer:
The lorry is traveling at a speed of 13 m/s which is less than the speed limit of 13.89 m/s
Step-by-step explanation:
The limit here is 50km/h
The speed at which the lorry is traveling is 13.5m/s
So we want to show that the lorry is traveling at a speed which is below the speed limit.
What we need to do here is to convert the speed limit to the same unit at which the lorry is traveling
What we are saying here is that we need to convert km/h to m/s
Hence, we are converting 50 km/h to m/s
What we need to do here is to convert the km to m by multiplying by 1000 then covert the hour to seconds by multiplying by 3600(in this case the time is the denominator so we shall be dividing)
Thus 50 km/h = (50 * 1000)/3600 = 13.89 m/s
Since 13m/s is less than 13.89 m/s
Then the lorry is traveling below the stipulated speed limit