We have a parabola.
As it is concave down, we have one maximum and no minimum.
We can identify the maximum at point (-2, 4).
Answer: (-2,4)
L = pounds of lollipop
c = pounds of caramel candies
0.95l + 1.10c = 30 ($0.95/lb & $1.10/lb)
l + c = 30 (mixture sells for $1/lb)
c = 30 - l
0.95l + 1.10(30 - l) = 30 (Substitution)
0.95l + 33 - 1.10l = 30
-0.15l = -3 (move terms)
l = 20lbs
Hope this helps.
Answer: 0.3439
Step-by-step explanation:
Total number of digits : 10
The number of digits except zero =9
The probability of selecting non-zero number :-

Then, the probability that one such phone number , the last four digits do not include any zero:-

Then , the probability that for one such phone number, the last four digits include at least one 0:-

Hence, the probability that for one such phone number, the last four digits include at least one 0 is 0.3439 .