A telephone company offers two different types of billing. The first choice is to pay 10.00 per month plus $0.09 per MB of data. The second choice is to pay 16.00 per month plus $0.07 per MB of data. Part A: Write a system of equations to model the situation the total cost for one month with each company

Part B: How many MB of data would you have to use in one month in order for both plans to cost the same amount? Explain your determined answer.

for this case we have the following expression:

to solve, we rewrite the expression as:

we apply double c and we have:

thus, the quotient is 48.

so, patel found a wrong ratio and the multiplication was incorrect.

option d

see explanation

step-by-step explanation:

since the sequence is geometric there is a common ratio r between consecutive terms, that is

r = 4 ÷ - 2 = - 2

r = - 8 ÷ 4 = - 2

r = 16 ÷ 8 = - 2

the next term - 13 must be incorrect as it should be - 32 for the sequence to be geometric.

the first 4 terms are therefore geometric with common ratio r = - 2

both equations and proportions are better.