Humans perceive sound intensity logarithmically. if the sound intensity increases by a factor of 100, then a human perceives the sound twice as loud. the sound intensity (soundintensitydata) and corresponding sound pressure level data (soundpressuredata) is provided for a fixed number of samples. estimate the sound pressure level (pressureestimate) for input soundintensity using nonlinear regression. calculate the first-order polynomial coefficients that fits the provided samples:

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

6

step-by-step explanation: