6.2 EXI Tell whether each statement is TRUE or FALSE.
Explain
1. When solving a system using substitution, if
you obtain an identity, then the system has no
solution
TRUE
FALSE
Explain your thinking.

What is the value of f(x) = 2.2 for f(-2)?

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

Astudent must have an average on five test that is greater than it equal to 80% but less than 90% to receive a final grade of b. devon's greades on the first four test were 78% 62% 91% and 80% what range if grades on the fifth test would give him a b in the course? ( assuming the highest grade is 100%)