Answer:
Step-by-step explanation:
6 - (2 - 4x)
sophia : 6 + 2 + 4x
sophia's expression is incorrect because she didn't distribute the negative sign thru the parenthesis correctly.
ursula : 6 - (-2x)
ursula's expression is incorrect because....well....I dont know how she got what she got...she possibly subtracted 2 from - 4x and got -2x
a correct equivalent expression is : 6 - 2 + 4x or 4 + 4x
Answer:
n=2
Step-by-step explanation:
2000 pounds = 1 ton 600000 pounds = X tons Hence X tons = (600000 x 1) ÷ 2000 = 300 tons 3 x 10ⁿ = 300 Hence 3 x 10ⁿ = 3 x 10² Hence n= 2
$.39 times x=cost
x=pounds