Sandy has $200 in her bank account. if she writes 6 checks for exactly $19.98 , what expression describesmthe change in her bank account? what is her account balance after ythe checks are chashed?

Can someone me do math because i am having a breakdown rn because i don’t get it

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Answer pls man im trying to get out of summer school