Answer: Diego has 5 fewer counters.
Step-by-step explanation:
In order to find the answer, you need to find the difference between the amount of counters Dara has compared to Diego.
(Amount Dara has) - (Amount Diego has) = Difference
12 - 7 = 5
Diego has 5 fewer counters
Part A:
C= a + bn
Make the two equations out of the words:
82 = a + b100 * 2.5 = 205 = a + b250
157 = a+ b250
Subtract the two,
205 = a + b250
- ( 157 = a + b250)
48 = a
Find b by substituting in a:
82 = a + b100
82 = 48 + b100
34 = b100
b = 0.34
Answer for part a: a = 48 , b = 0.34
Part B:
C = a +bn <- when n = 300 , put in a and b, then solve
C = 48 + 0.34(300)
C = 48 + 102
C = 150
Cost when hiring a lorry to travel 300 miles is 150 pounds
(10x) + (5y) = maximum number of points possible for test
The answer is B
Hope this helps
