Step-by-step explanation:
A. D(t) = -25t + 160
this is the correct answer because if you substitute 3 you get 85
Answer:
£70.00
Step-by-step explanation:
You basically want to find what she spent in total, then subtract the amount she spent on ingredients.
50 glasses of lemonade at £2.10 each would be £105. (50*2.1)
Subtract the cost of ingredients, which is £35, with the total she made, £105, to get £70 (105-35)
As the mapping suggests, the first (x) coordinate is decreased by 3, and the second (y) coordinate is increased by 2. So, given the inputs, you have


And yes, this rule is a function: it has a starting set (the domain), which is all possible couples
, and a landing set (the codomain), which is again composed by the couples
. Since for every point in the domain you have one and only one output, this rule is a function.
Answer:
The total earnings for the two days is (15+d) dollars
Step-by-step explanation:
The total earning for the two days can be expressed as;
C=M+T
where;
C=total earnings for the two days
M=total earnings on Monday
T=total earnings on Tuesday
In our case;
M=$15
T=d
replacing;
C=(15+d)
The total earnings for the two days is (15+d) dollars