Answer:
it is 7.5 rate
Step-by-step explanation:
I used a calculator to get the answer and it is correct.
Answer:
a) y = 5x
b) y = 60
Step-by-step explanation:
Since, y is directly proportional to x when y=30, x=6

Answer:
6 cookies
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Christine has 2 MORE than Matt.
2 + 2 = 4(Christine)
4 + 2 = 6(total)
Answer:
4 × ( 9 + 2z)
Step-by-step explanation:
36 + 8z = 4 × (9) + 4 × (2z) ; so here 4 is a common factor
= 4 × ( 9 + 2z)
we can also write it like this
36 + 8z = 2 × ( 18 + 4z)