Just plot it and solve by counting
Total number of hours = 15
Let the hours spent tutoring french be x.
Therefore hours spent on scooping ice cream = (15 - x)
Amount: Tutoring french is $15 an hour, total for x hours = 15x
For scooping ice cream it is $10 an hour 10*(15 - x) = 150 - 10x
To make more than $180
15x + (150 - 10x) > 180
15x + 150 - 10x > 180
15x - 10x > 180 - 150
5x > 30
x > 30/5
x > 6
So he needs to tutor more than 6 hours in order to make more than $180
Answer:
A = 12
Step-by-step explanation:
Given A is inversely proportional to B then the equation relating them is
A = 
To find k use the condition when A = 4, B = 36 , then
4 = 
( multiply both sides by 36 )
144 = k
A = 
← equation of variation
When B = A , then
A = 
( multiply both sides by A )
A² = 144 ( take square root of both sides )
A = ± 
= ± 12
Since A is a positive number then A = 12
Answer: c) $30,799.45
Step-by-step explanation:
Assuming there are 52 weeks in a year, the rate and time would be converted to;
Rate = 8%/52 = 8/52%
No. of periods = 9 years * 52 weeks = 468
The amount Mr Mantle would have is;
= 15,000 * ( 1 + 8/52%) ⁴⁶⁸
= $30,799.45276
= $30,799.45
