How many constructors are there in the following class declaration?class CashRegister { public: CashRegister(); CashRegister(int count); void set_item_count(int count); void view() const; private: int item_count; }; CashRegister::CashRegister() { set_item_count(0); } CashRegister::CashRegister(int count) { set_item_count(count); }a. 0b. 1c. 2d. 3

Function name: poly parameters: int returns: int description: a polynomial of degree n with coefficients a0,a1,a2,a3, . . ,an is the function p(x) = a0+a1x+a2x2+a3 ∗ x3+ . . +an ∗ xn this function can be evaluated at different values of x. for example, if: p(x) = 1+2x+ x2, then p(2) = 1+2 ∗ 2+22 = 9. if p(x) = 1+x2+x4, then p(2) = 21 and p(3) = 91. write a function poly() that takes as input a list of coefficients a0, a1, a2, a3, . . , an of a polynomial p(x) and a value x. the function will return poly(x), which is the value of the polynomial when evaluated at x.