Answer:
63
Step-by-step explanation:
7n^2....n = 3
7(3^2) = 7 * 9 = 63 <==
Not enough Information. I could say 50 and it would work. I could say 68 and it would work. Any even number thats under 80 but higher than what you think her eldest son is.
Step-by-step explanation:
f (x)= x-7
= -1-7
= -6
g (x)= x^2
= (-1)^2
=1
Answer: 4 n
Step-by-step explanation:
Answer:
12 students
Step-by-step explanation:
1. 7s+16=100
We know the teacher has 100 markers, and she gave each student 7. If we say that s is the number of students, then 7s is the number of markers she gave out. We also know that she had 16 left over.
2. 7s+16-16=100-16
Subtract 16 from both sides of the equation.
3. 7s=84
Simplify the equation.
4. 7s/7=84/7
Divide both sides by 7.
5. Simplify the equation. Since s is the number of students, we now know how many students there are in the teacher's class.