The easy answer: If, say, B is the zero matrix, i.e.

then

Answer:
4 + 0.32x
Step-by-step explanation:
0.32 = cost of one text message
0.32x = cost of x text messages
4 + 0.32x = monthly cost of x text messages
7,613 ,7,361,7,136
hope that helped

Step-by-step explanation:
Given functions are:

h(x) is the product of g(x) and f(x)

Combining like terms

Hence,

Keywords: Functions, product
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