If f(n) = 3n+ 5 , find f(-3). soln, 3n+ 5
2 answers:
Answer: f(-3) = -4
Concept:
Here, we need to understand the idea of evaluation.
When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.
Solve:
<u>Given expression</u>
f(n) = 3n + 5
<u>Substitute values into the expression</u>
f(-3) = 3(-3) + 5
<u />
<u>Simplify by multiplication</u>
f(-3) = -9 + 5
<u>Simplify by addition</u>
f(-3) =
Hope this helps!! :)
Please let me know if you have any questions
You might be interested in
Answer:
Surface area of the whole figure
Step-by-step explanation:
The surface area of the figure :
Surface area of the cylinder(excluding top)+Surface area of the cone(excluding bottom)
Radius of the cylinder=3 inch and Height of cylinder=13 inch
Surface area of the cylinder with one circular face
As,
Surface area of the cone excluding base:
l= slant height=5 inch r= radius= 3 inch
Surface area of the cone =
Total surface area of the whole figure