Which of the following is a polynomial? Choose all answers that are correct. A. −4x√−2x
B. 5x2 – x–1 + 2
C. –0.4a3 – 5b
D. 4ab2 – 2b + 1

b i think

step-by-step explanation:

not really sure

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.

no

step-by-step explanation:

m∠a is 90°

m∠b is 40°