we can use
sound level formula

where
is the sound level for a noise
I is intensity given
I0 is reference intensity
we know that reference intensity as

we are given

now, we can plug these values
and we get

now, we can simplify it

................Answer
SOLUTION:
Let's first establish the problem we will solve.
= 4 ÷ 1 / 6
Now we will turn this from division into multiplication by changing the division symbol ( ÷ ) into a multiplication symbol ( × ) and doing the reciprocal of the fraction after the symbol. Reciprocal basically means to make the numerator the denominator and make the denominator the numerator in the fraction.
= 4 × 6
Now we will simply write the product of the two numbers to achieve our final answer.
= 24
Hope this helps! :)
Have a lovely day! <3
Answer:
Step-by-step explanation:
Time/mph
Answer:
B) 5
Step-by-step explanation:
f(-2) = (-2)² + 5•(-2) +11
f(-2) = 4 -10 +11
f(-2) = 5