Question

IS THIS CORRWCT PLEASE I NEED SOME HELP
PLEASEEEE
Anyone there help me please

Answer 1

`\sf\\\textsf{Your answer is wrong.}`

Step-by-step explanation:

`\sf\\\textsf{The sequence given here is the algebraic sequence because the terms in the}\\\textsf{sequence increases by a fixed common difference, 2.5}\\\textsf{Now,}\\\textsf{First term(a) = -7}\\\textsf{Common difference(d) = 2.5}\\\textsf{The formula for nth term of an algebraic sequence is: }\\t_n=a+(n-1)d\\or,\ t_n=-7+(n-1)* 2.5\\or,\ t_n=-7+2.5n-2.5\\or,\ t_n=2.5n-9.5`

`\sf\\\textsf{Now the function that describes the sequence is: }\\\sf f(n)=2.5n-9.5`

`\sf\\Check:\\\textsf{Put n = 1,}\\f(1)=2.5(1)-9.5=2.5-9.5=-7\\\textsf{Put n = 2,}\\f(2)=2.5(2)-9.5=5-9.5=-4.5\\\textsf{Put n = 3,}\\f(3)=2.5(3)-9.5=7.5-9.5=-2\\\textsf{Put n = 4,}\\f(4)=2.5(4)-9.5=1-9.5=0.5\\\textsf{We got the same numbers in the sequence by putting value of n as 1, 2, 3 and 4.}\\\textsf{So this is the function that represents the given algebraic sequence.}`

`\sf\\\textsf{Now when you put n = 1 in your function,}\\f(1)=-2.5(1)+(-7)=-2.5-7=-9.5, \textsf{ which is not the first term in the}\\\textsf{sequence. So your answer is not correct.}`