What number is ten times greater than 0.3

3

Step-by-step explanation:

The number ten times greater than 0.3 will be 0.3 in ten places

= 0.3 x 10

=3

I hope this helps.

The number is 3

Step-by-step explanation:

Step 1:  Convert words into an expression

What number is ten times greater than 0.3

n = 10 * 0.3

Step 2:  Multiply

n = 10 * 0.3

n = 3

 The number is 3

25

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