Mathematics, 31.05.2021 01:00 pal23

If `f(x)=sqrt(7x+2)`, which expression represents f^-1(x)? (Here: `x>=-(2)/(7)`) A. ` 1/(sqrt(7x+2)) `
B. ` (x^2+2)/7 `
C. ` (y^2-2)/7 `
D. ` (x^2-2)/7 `

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If `f(x)=sqrt(7x+2)`, which expression represents f^-1(x)? (Here: `x>=-(2)/(7)`) A. ` 1/(sqrt(7x+2)) ` B. ` (x^2+2)/7 ` C. ` (y^2-2)/7 ` D. ` (x^2-2)/7 ` Help!

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Another question on Mathematics

If `f(x)=sqrt(7x+2)`, which expression represents f^-1(x)? (Here: `x>=-(2)/(7)`) A. ` 1/(sqrt(7x+2)) `
B. ` (x^2+2)/7 `
C. ` (y^2-2)/7 `
D. ` (x^2-2)/7 `

Help!