Solve x= √x+7 +5
check for extraneous solutions

(pls show work)

x = 9

Step-by-step explanation:

Let's solve your equation step-by-step.

Step 1: Flip the equation.

Step 2: Add -5 to both sides.

Step 3: Solve Square Root.

(Square both sides)

(Factor left side of equation)

  or   (Set factors equal to 0)

x = 2 or x = 9

x = 2 (Doesn't work on the original equation)

x = 9 (Works in the original equation)

x = 9

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap

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.