(-5)^2-2x(-9)+6
show work and step by step.

Step-by-step explanation:

Use PEMDAS:

PParentheses first

EExponents (ie Powers and Square Roots, etc.)

MDMultiplication and Division (left-to-right)

ASAddition and Subtraction (left-to-right)

(-5)² - 2 × (-9) + 6          first Exponents

25 - 2 × (-9) + 6          next Multiplication

25 + 18 + 6              next Addition

43 + 6 = 49

answer:

it will cost 480 dollars to refurbish the larger wood floor

step-by-step explanation:

as it's a ratio of 4 that costs 384 dollars, divide the price by the ratio

384 / 4 = 96 dollars

96 dollars per unit of the ratio

now to get the price to refurbish the larger wood floor, times the price by the units

96 * 5 = 480

the first one, all those points on the line just make a strait line.