Which of the expressions below has a 4 in the ones place of the sum? Select all that apply. A) 7.46 + 6.22
B) 134.5 + 121.8
C) 12.35 + 11.81
D) 91.45 + 13.23

its C or D

Step-by-step explanation:

i think it's both !

answer: your gay

step-by-step explanation:

you dont know math

the solution of the equation is 2.23 ⇒ answer b

step-by-step explanation:

* lets revise the meaning of exponential function

- the form of the exponential function is y = ab^x, where a ≠ 0, b > 0 ,  

  b ≠ 1, and x is any real number

- it has a constant base b

- it has a variable exponent x

- to solve an exponential equation, take the log or ln of both sides,  

  and solve for the variable

* lets solve the problem

∵

- the base is 7 and the exponent is x

- insert ㏑ in both sides

∴

- use the rule

∴ x ㏑(7) = ㏑(77)

- to find x divide both sides by ㏑(7)

∴

* the solution of the equation is 2.23 to the nearest 2 decimal places