What is a counterexample for the statement “If equals 81, then x must be 3”? A.) x must be -3
B.) x must be 2
C.) x must be -4
D.) x must be 9

The vet charges $45 for an office visit and $10 for each vaccination your dog needs. write an eaquation

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !

Yvaries directly as x. y =90 when x=6. find y when x=13