When devon cashed a $450 check at the bank, the teller gave him 18 bills, all $20 bills and $50 bills. which system of equations can be used to find how many of each type of bill devon received?
a) f- t = 18; 50f + 20t =450
b) f + t = 18; 50f + 20t = 450
c) f + t = 450; 50f + 20t = 18
d) f + t = 18; 50f - 20t =4 50

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

What is a possible solutions of the x> 3?

Colby and jaquan are growing bacteria in an experiment in a laboratory. colby starts with 50 bacteria in his culture and the number of bacteria doubles every 2 hours. jaquan starts with 80 of a different type of bacteria that doubles every 3 hours. let x equal number of days. colbys experiment follows the model: a.) y=50*2^x b.) y=50*2^8x c.) y=50*2^12x jaquans experiment follows the model: a.)80*2^x b.)80*2^8x c.)80*2^12x