Me with ! simplify these expressions: a) 3 2/3x-4/5(x- 3 3/4) b) 2 1/4x+(4 1/3x-7 4/5) divided by 2 3/5 c) 8x-1 1/7 (1 1/3x-12) d) 11 4/7x+(5x- 2 2/5)

If u good at math hit me up on insta or sum @basic_jaiden or @ and

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%)

The graph of the the function f(x) is given below. find [tex]\lim_{x \to 0\zero} f(x)[/tex] [tex]\lim_{x \to 1+\oneplus} f(x)[/tex] [tex]\lim_{x \to 0-\zeroneg} f(x)[/tex]