Answer:
Step-by-step explanation:
5a - 9 + a = 9
6a - 9 = 9
6a = 9 + 9
6a = 18
a = 18/6
a = 3 <=====
Answer:
C
Step-by-step explanation:
We know it's direct variation using the direct variation equation.
Where k is the constant.
Since 7 times x is the y values,
Now we can substitute 7 into k of the direct variation equation.
Answer:
25
Step-by-step explanation:
Because they cost $25 to make so in order to cover the cost they would need to charge at least 25, but out of those choices if they wanted to make a profit they'd need to charge the $50
Answer:
y=3×-11
Step-by-step explanation:
y=m+c
m=7-1÷6-4
m=6÷2
m=3
y=3+c
7=3(6)+c
7-18=c
-11=c
y=3×-11
Answer:
81.39% increase.
Step-by-step explanation:
Given: There is change in number from 43 to 78.
First lets find the amount of change or difference in number.
Difference in number=
∴ Difference in number show that there is an increase of 35 number.
Now, finding the percent change in the number.
Percent=
⇒ Percent change in number=
∴ 81.39% increase in the number.