you evaluated expressions that have variables and exponents. evaluate the expression 5 + 2n² when n = 3. 17…
you evaluated expressions that have variables and exponents. evaluate the expression 5 + 2n² when n = 3. 17 23 41 63
Answer
Answer:
B. 23
Explanation:
Step1: Substitute n value
Substitute $n = 3$ into $2n^{2}$, we get $2\times3^{2}=2\times9 = 18$.
Step2: Calculate the whole expression
Add 5 to the result of $2n^{2}$, so $5+18 = 23$.