Question

Помогите пожалуйста решить срочно ​

Answer 1

Объяснение:

f(0)=2*0+8=8

f(¼)=2*¼+8=8 1/2

f(-2)=2*(-2)+8=-4+8=4

f(-⅛)= 2*(-⅛)+8= -¼+8= 7 ¾

f(x)=7

2x+8=7

2x=7-8

2x= -1

x= -½

f(x)= -4

2x+8= -4

2x= -4-8

2x= -12

x= -6

Answer 2

$\displaystyle\bf\\f(x)=2x+8\\\\\\f(0)=2\cdot 0+8=8\\\\\\f\Big(\frac{1}{4} \Big)=2\cdot\frac{1}{4} +8=\frac{1}{2} +8=8\frac{1}{2} =8,5\\\\\\f(-2)=2\cdot(-2)+8=-4+8=4\\\\\\f\Big(-\frac{1}{8} \Big)=2\cdot\Big(-\frac{1}{8}\Big) +8=-\frac{1}{4} +8=7\frac{3}{4} =7,75\\\\\\f(x)=7\\\\2x+8=7\\\\2x=-1\\\\\boxed{x=-0,5}\\\\\\f(x)=-4\\\\2x+8=-4\\\\2x=-12\\\\\boxed{x=-6}$