R Studio Programming Question Use your function `fgrade` to add a final column to the data frame `allgrades`, with the final letter grade in each...

R Studio Programming Question

Use your function `fgrade` to add a final column to the data frame `allgrades`, with the final letter grade in each case. using the `sapply()` function as shown below

```{r}

allgrades=read.csv("https://raw.githubusercontent.com/reisanar/datasets/master/grades204.csv", header = TRUE)

library("bindrcpp")

mutate(lgrade = sapply(total, fgrade)) <-- not sure

```