What is the GCF of 20 and 24?
A) 4
B) 6
C) 8
D) 12

Ineed me i stuck and i don’t want to get it wrong

Tim open up a new saving account with a $50 deposit and plant to deposit $20 per week into the same account. write an expression to represent the total amount in his savings account.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.