What is the value of in scientific notation?

Here is your

5.3 × 10^4 × 4.2 × 10^3

5.3 × 4.2 = 22.26

4 + 3 = 7

= (22.26 × 10^7) or option B.

When doing questions like these you will have to multiply the two numbers on the left of the multiplication sign which in this case is 5.3 and 4.2 which would equal 22.26 but then you have to add the exponents in this case it would be 4 and 3 and would equal 7 which through all would equal 22.26 × 10^7 or option B.

Hope this helps!

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b