Find the value of:

a) 2x when x=5

b) 4y when = - 3

c) 3z when z = 1.2

A. 10. B. - 12. C. 3.6

Step-by-step explanation:

You will do this:

a) If x=5 (what about 2x)

=2x times 5 divide by x. That makes the answer 10

b) If y=-3 (what about 4y)

=4y times - 3 divide by y. That makes the answer - 12.

c) If z=1.2 (what about 3z)

=3z times 1.2divide by z. That makes the answer 3.6.