For the second problem the answer D, -9, -11
Answer:

Step-by-step explanation:

Answer:
90 + 6
Step-by-step explanation:
90 + 6 = 96
<u>ALTERNATIVE</u><u>:</u>
96 - 6 = 90
Y varies directly as x: y=kx, k is a constant.
when x=7, y=21, so we know k=3
therefore, the equation is y=3x
Answer:


B) 15
D) 420
Sorry C I don't know.. Xd
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