Select the correct answer.Betty has a checking account and a non-interest-bearing savings account. Function C represents her checking account balance, where x is the number of months. Function S represents her saving account balance.𝐶⁡(𝑥)=-∣240⁢𝑥−140∣+1,400𝑆⁡(𝑥)=450⁢𝑥+100Which function represents Betty's total account balance, 𝑇⁡(𝑥) ? A. 𝑇⁡(𝑥)=-∣240⁢𝑥−140∣+450⁢𝑥+1,500 B. 𝑇⁡(𝑥)=-∣240⁢𝑥−140∣+450⁢𝑥+1,300 C. 𝑇⁡(𝑥)=-∣240⁢𝑥−140∣+450⁢𝑥+1,400 D. 𝑇⁡(𝑥)=∣240⁢𝑥+140∣+450⁢𝑥+1,500

The output of the following function is the future value of an account if:PV dollars are depositedLeft for Y yearsAt an annual rate of rWith n compounds per year                                                                                     𝐹𝑉=𝑃𝑉(1+𝑟𝑛)(𝑛𝑌)  Marissa plans to put $4300 dollars in an account that earns 4% interest compounded monthly. Use the formula or the FV function in Excel to find Marissa's account balance in 13 years.  (Do not round until the final answer, then round your answer to the nearest dollar, and don't include the dollar sign.)

Consider the following function:𝐴(𝑃,𝑟,𝑛,𝑡)=𝑃(1+𝑟𝑛)𝑛𝑡Where the variables have the following meaning:𝐴 = Amount accumulated 𝑃 = Principal𝑟 = interest rate 𝑛 = compounding per period 𝑡 = number of periods Find the value of the function when 𝑃=350, 𝑟=7.5%, 𝑛=12, and 𝑡=8.(Round your answer to the nearest whole number.)

Christopher has just turned 13 and decided to save for his mission. He has a part time job and can save $30 a week. He found a savings account with an APR of 0.8%. He wants to know how much he will have when he turns 18.Christopher knows the following two commands in Microsoft Excel:PMT(rate, nper, PV, FV)FV(rate, nper, pmt, PV)If Christopher assumes there are 4 weeks in a month, which of the following commands should Christopher use to find out his account balance when he turns 18?Group of answer choices=FV(0.008,13*12,30,0)=FV(0.008/12,5*12,30*4,0)=FV(0.8/12,5*12,0,30)=FV(0.008/12,13,0,30*4)=FV(0.8/12,18*12,30*4,0)

A power company calculates a person's monthly bill from the number of kilowatt-hours (kWh), x, used.The function 𝑏(𝑥)={0.15𝑥,𝑥≤2000.10(𝑥−200)+30,𝑥>200b(x)={ 0.15x,x≤2000.10(x−200)+30,x>200​ determines the bill.How much is the bill for a person who uses 300 kWh in a month?A.$55B.$40C.$60D.$45

Use a function in Excel to answer the following question.How much money would you have in a savings account at the end of 5 years if the following were true?You make payments of $15 a month to your savings account every month for 5 years.Your savings account an interest rate of 1.2% that does not change during the 5 years.You will not take any money out of your savings account during this 5-year period.You start with $0.Group of answer choices$1,307.06 in your savings after 5 years-$927.07 in your savings after 5 years$927.07 in your savings after 5 years$0.26 in your savings after 5 years