Brandon buys a radio for $43.89 in a state where the sales tax is 7percent

$3.07 in taxes

Step-by-step explanation:

You multiply 43.89 by .07 and the number you get is 3.07 and that represents the taxes. The total would be 46.96

5.87

Step-by-step explanation:

So to get 7 percent of 43.89 what you would have to do is.

take the 7% and move its decimal two places to the left like the following

7. goes to .07 and you could just multiply .07 by 43.89 and get 5.87. you an do that with any percent just mover its decimal two places to the left and multiply what ever amount of number you have

-13

step-by-step explanation:

f(x)=2x-5 for f(-4)

f(-4)   means let x=-4

f(-4) = 2(-4) -5

f(-4) =-8-5

      = -13

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.