b. write an equation where a number is multiplied by a variable, and a solution is -4/5

The needed equation is :

Step-by-step explanation:

A variable is defined as the UNKNOWN quantity whose value is determined on the basis of equation in which it is used.

A number or CONSTANT is defined as the KNOWN quantity whose value is NOT BASED on the basis of equation in which it is used.

Foe example C = 3, 5 ,-9,0 ...

Here, let us assume here the variable = m

And let us assume a number to be a CONSTANT C.

So, here Constant number C  is multiplied with variable, we get :  C x m

Also, the resultant is (-4/5)

So, The statement : a number is multiplied by a variable, and a solution is -4/5 is written as:

Hence the needed equation is

yes

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step-by-step explanation:

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)