(I have the answers I just need to show the work for b&c help pleasee)

Maribel was approved for a 7-year private student loan at 6.8% to cover her college costs of $10,900.

b. What is the total amount she will pay back? $13,729.80

c. What is the total interest amount? $2,829.80

The heaviest 16% of all men in weight weigh more than how many pounds ?

Cassie is traveling 675 miles today to visit her brother and his family. so far, she has stopped for gas three times. at the first stop, she put in 7.1 gallons of gas and paid $23.79. at her second stop, she put in 5.8 gallons of gas and paid $19.08. and, at the third stop, 6.6 gallons and paid $20.39. at which stop did casey pay the most for gas?

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above