During one month of cell phone use, noah used 200 anytime minutes and 400 text messages, and paid $80. the next month, he used 150 anytime minutes and 350 text messages, and paid $67.50. which statement is true?
a) each text message costs 5 cents more than each anytime minute
b) each anytime minute costs 10 cents more than each text message
c) a text message and an anytime minute each costs 25 cents
d) each text message costs double the amount of an anytime minute

a) each text message costs 5 cents more than each anytime minute

Step-by-step explanation:

Let x be the cost of anytime minutes and y be the cost of text messages.

Then for the first month, equation for the total amount Noah paid

...(1)

For the second month, equation for the total amount Noah paid

....(2)

Now subtract equation (1) from equation (2), we get

Put y=0.15 in (1), we get

Thus, the cost of anytime minutes(x)= $0.10= 10 cents

and the cost of test messages(y)=$0.15=15 cents

Difference=15-10=5 cents

Hence,  each text message costs 5 cents more than each anytime minute.

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.