Anna said that the product of 7/8 · 1 1/2 = 7/2. (the top numbers are fractions fyi)
How can you tell that her answer is wrong?

A. The denominator cannot be the same as one of the factors.

B. The answer cannot be an improper fraction.

C. The answer must be less than 7/8.

D. 7/8 of a number cannot be greater than the number.

about 0.75 hours

step-by-step explanation:

0,0

step-by-step explanation:

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