Question 27 (5 points) Determine the product. Write your answer in scientific notation.
(15.4 x 102) · (2.8 x 10-4) = ?
431.2 x 102
43.12 x 10-3
4
4.312 x 10-1
7
431.2 x 10-4
30
Question 28 (5 points)
Determine the sum. Write your answer in scientific notation.

answer: i believe its b. if you sound out the sentences that sounds wrong.

because linear equations are a lot simpler than quadratics equations, and linear equations formula is a lot easier to memorize. that's why i think they're harder.

the formula of a slope:

from a table we have

substitute:

the slope of f(x) is -1.

the graph of funcfion g(x) is a horizontal line. the slope of a horizontal line is equal 0. therefore the slope of g(x) is 0.

-1 < 0

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies