Make a plot from separate numerics and characters? [novice]

[cwright1]

I have 4 separate results from an upstream analysis. I want to combine them and make a plot. I'm not sure the best way to go about this, appreciative of any advice you have.

drug1_concentration = 30 (character)
drug2_concentration = 80 (character)
drug1_response = 16 (numeric)
drug2_response = 18 (numeric)
combined_response = 99 (numeric)

I want to take these 4 pieces and make a simple plot like so:

Thank you!

[FJCC]

Here is a start. How close to you want to get to the style of the plot you posted?

library(ggplot2)
DF <- data.frame(Conc = c("30", "80", "Combined"), Response = c(16, 18, 99))
ggplot(DF, aes(x = Conc, y = Response)) + geom_col(fill = "steelblue", width = 0.5) +
  labs(x = "Drug Concentration", y = "Drug Response") +
  coord_flip()

^{Created on 2020-09-22 by the reprex package (v0.3.0)}