Answer:
Area = 3x^2 + 4x
Step-by-step explanation:
Givens
W = x
L = 3x + 4
Formula
Area = L * W
Solution
Area = x(3x + 4)
8
plug in the number 4, it would be 5•4-12
Do 5•4=20
20-12=8
43m
yessir
D. x + 10 pence
Since the pen costs 10 pence more than the ruler, we need to add 10 to x.
