Penelope has $1,459.75 in her bank account. to pay her bills, she writes 4 checks in the amounts of $200.25, $359.45, $125, and $299.35. then she deposits $375 into her account. penelope’s account balance after she pays her bills and makes the deposit is $

What is the number 321,000,000 in scientific notation? also what is the number? ?

Eric has challenged himself to walk 24,000 steps in 4 days. if eric walks the same number of steps each day, which function represents the number of steps eric still needs to walk to reach his goal with respect to the number of days since he started his challenge? a. y = 8,000x − 24,000 b. y = -8,000x + 24,000 c. y = 6,000x − 24,000 d. y = -6,000x + 24,000

The mean of 10 values is 19. if further 5 values areincluded the mean becomes 20. what is the meanthese five additional values? a) 10b) 15c) 11d) 22