Answer:
she used distributive property
Step-by-step explanation:
What she did 5x3 then 5x4
Answer:
3(-9+17)
Distributive property:
3*-9
3*17
3 times -9 is -27
and 3*17 is 51
you are left with -27+51
now you add and get 24
you could also use PEMDAS
do 3(8)
and get 24
So your answer is 24, Hope that helps!
Answer:
8x + 2 and 4x - 6
Step-by-step explanation:
(f + g)(x)
= f(x + g(x)
= 6x - 2 + 2x + 4 ← collect like terms
= 8x + 2
(b)
(f - g)(x)
= f(x) - g(x)
= 6x - 2 - (2x + 4) ← distribute parenthesis by - 1
= 6x - 2 - 2x - 4 ← collect like terms
= 4x - 6
Luz earns $400 for 40 hours of work
this represents :
400/40 = $10 per hour
therefore
in 6 hours, she will earn :
6 x $10 = $60
