Which two values of x are the roots of the polynomial below? x^2+5x+11

 The roots of the given polynomial are

Step-by-step explanation:  We are given to find the two values of x that are the roots of the following quadratic polynomial:

To find the roots, we must have

We know that

the solution set of quadratic equation of the form is given by

From equation (i), we have

a = 1,  b = 5   and   c = 11.

Therefore, the solution of equation (i) is given by

Thus, the roots of the given polynomial are

answer: c, the green line

step-by-step explanation:

there is no black line, eliminate b.

simple interest implies periodic payments, but the red line shows no payments, eliminate d.

simple interest has equal payments. if paid say every day, the graph is about a straight line (actually a stairstep).

the yellow line is not straight, eliminate a.

check: the green line is straight, answer is c.

simple interest with positive interest rate gives a straight line sloping up to the right. green line:

g(t) = $100 + ($200-$100) ÷ (20 years) × (t years)

= $100 + (4%/year) × ($100)(t years)

incidentally, the yellow line curving upward represents continuously compounded interest

y = $100 × 2^(t years / (14 assuming the yellow line hits $200 at 14 years. 2^0 is 1, so y(0) = $100; 2^(14/14) is 2, so y(14) = $200.