Answer:
y=11.46
Step-by-step explanation:
[tex]y = 8.7 + 0.23x \\ y = 8.7 + 0.23(12)[/tex]
[tex]y = 8.7 + 0.23 \times 12 \\ y = 8.7 + 2.76[/tex]
[tex]y = 11.46[/tex]
[tex]to \: multiply \: 0.23 \times 12 \\ you \: convert \: the \: decimal[/tex]
[tex] = 23 \ \times 12 \div 100 \\ = 276 \div 100[/tex]
[tex] = 2.76[/tex]
hope I helped
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