Question

Can someone check my answers?! Please?!
Which expression is equivalent to (j^2k^3)(jk^2)
j^2 k^2
j^3 k^5 ~ my answer ~
j^2 k^6
j^3 k^5

which equation has (2, -6) and (-3, 4) as solutions
y = 1/2 x - 7
y = 2x - 10 ~ my answer ~
y = - 1/2 x - 5
y = -2x - 2

which equation best represents the statement: two more than twice a number is the number tripled
2 + n = 3n
2n + 2 = 3n ~ my answer ~
2(2 + n) = 3n
2n + 2 = 3 + n

Answer 1

first one is right

Answer 2

One light-year is about 5.9 x 10^12 mi. If it takes light three months to travel from one star to another, about how far apart are the stars?

2 x 10^3 mi
1.5 x 10^4 mi
1.5 x 10^12 mi
2 x 10^12 mi ~ my answer ~

Answer 3

second one is wrong

Answer 4

third one is right

Answer 5

last one is wrong

Answer 6

ok. thanks for the help!!

Answer 7

for the last one, divide by 4

Answer 8

thanks!

Answer 9

for the second one, i think you computed the slope incorrectly
it should be \(-2\) and not \(2\)

Answer 10

thanks