5. Which of the sets of ordered pairs satisfies an exponential equation? A. (1,2), (3,8), (5,32), (7,128)
B. (1,-2), (3,2), (5,6), (7,128
C. (1,1), (2,8), (3,27), (4,64)
D. (1,-1), (2,-4), (3,-9), (4.-16)

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

27 + 13x + 15 = (x + 5)( =

step-by-step explanation:

27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( = 27 + 13x + 15 = (x + 5)( =

x = 3 ± √(5+y)

your answer is  

a.

5

step-by-step explanation: