Answer:
C Both relation and function.
Step-by-step explanation:
This would pass the vertical line test so it is both a relation and a function
Answer:176 psychology textbooks and 98 Biology textbooks were sold.
Step-by-step explanation:
Let x represent the number of psychology textbooks that were sold.
Let y represent the number of biology textbooks that were sold.
textbook store sold a combined total of 274 psychology and biology textbooks in a week. This means that
x + y = 274 - - - - - - - - - - -1
The number of psychology textbooks sold was 78 more than the number of biology textbooks sold. This means that
x = y + 78
Substituting x = y + 78 into equation 1, it becomes
y + 78 + y = 274
2y = 274 - 78
2y = 196
y = 98
x = y + 78 = 98 + 78
x = 176
Answer:
12.5%
Step-by-step explanation:
sum the parts of the ratio 1 + 3 + 4 = 8 parts
8 parts represents 100%, hence
1 part = 
= 12.5% ← Andy's percentage of the total
Answer:
gives the solution 
.
gives the solution 
.
Step-by-step explanation:
I will solve both interpretations.
If we assume the equation is 
, then the following is the process:
Add 5 on both sides:
Simplify:
Now write an equivalent logarithm form:
Now using the change of base:
.
If we assume the equation is , then we use the following process:
Write an equivalent logarithm form:
Add 5 on both sides:
Use change of base formula:
Answer:
You would need 18 quarts of sparkling water to mix with 9 quarts of grape juice
Step-by-step explanation:
1 1/2 ---------> 3/4
x --------------> 9
We clear the value of x:
x = ((9) / (3/4)) * (1 1/2)
Rewriting we have:
x = ((9) * (4/3)) * (1 1/2)
x = (36/3) * (1 1/2)
x = (12) * (1 1/2)
x = (12) * (3/2)
x = 18
