Explanation

where x is the number of days since the start of the job
and f(x) is the rate of change
Step 1
a)find the total expenditure if the job takes 12 days
so, as x represents the number of days, just replace and calculate
let x= 12

so
a) 51.1
Step 2
now, let's find the total spent on the job from the 10 to 20th day
a) find the x value ( number of days since the job started)
x= 20 days-10dys= 10
so
x= 10
The distance between point C and point D is 10.
Point D is on the 1 and Point C is on -9.
1-(-9)=10.
Answer:
0.3
Step-by-step explanation:
Answer:
22 years old
Step-by-step explanation:
For this case we propose a rule of three to obtain the number that represents 25% of 37.
So, we have:
37 --------> 100%
x -----------> 25%
Where "x" is the number that represents 25% of 37.

Finally, we have that 25% of 37 is 9.25.
Answer:
25% of 37 is 9.25.