Evaluate the expression when t = - 6.4 and u = - 2.8.

t - 4u

A.

-17.6

B.

4.8

C.

17.6

D.

29.12

-6.4 - 4 (-2.8)

-6.4 - - 11.2 = 4.8

Your answer is B: 4.8

The answer is - 17.6.

It is - 17.6 because when there is a number next to a letter you multiply. And 2.8 times 4 equals 11.2. Then you subtract it by - 6.4.

so it is - 6.4 - 4x2.8