Evaluate each expression if a=1/2 b=15 and c=9. c2 + a (2 is a exponent) 2ac. b2 - 5c (2 is exponent). here is a picture if you don't know sorry.

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09

well there are two answers for that.

1: you need 120 ones then that will equal up to 120.

2: you could also do one 100 and 2 tens.

those are the answers that i have thought of.