At the paint store, different colors are mixed for customers. Jimmy needs to make 21 gallons of paint with a red to yellow ratio of 3 to 4. Which tape diagram can determine which one he should use? plz help :D

b

Step-by-step explanation:

there are three red blocks and four yellow blocks

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.

what i would say the best answer is a. 40.5