John opens a savings account with an initial deposit of $2000. he deposits $35 each week. mary's savings account is represented by the function y = $45x + $2800 , where y is the balance of mary's savings account after her initial deposit and a number of weekly deposits, x. which statement best compares the rate of change for the two accounts?

a) mary deposited $800 less than john.
b) john deposits $10 more each week than mary.
c) john deposits $10 less each week than mary.
d) mary deposits $7 for every $9 john deposits.

The statement that best compares the rate of change for the two accounts is:

Step-by-step explanation:

In the equation that determines Mary's savings account balance:

It can be identified that the $ 2800 mentioned is the initial deposit with which the savings account was opened, so the value of $ 45 is the weekly moment that Mary saves week after week, which will be increased once the variable X increase, considering that John's weekly savings amount is $ 35, it is valid to state that John saves $ 10 less than Mary since:

my guess would be b and d, but i didn’t actually get out the pen and paper. lol