In fuction f(x)= 4(x^2-6x+ )+20, what number belongs in the blank to complete the square

Chip worked at the animal shelter for 6 hours each week for several weeks. he worked for a total of 42 hours. which of the following can be used to find the number of weeks chip worked at the animal shelter?

Write the sentence as an equation. z plus 372 is equal to 160

Jonah runs 3/5 miles on sunday and 7/10 mile on monday. he uses the model to find that he can ran a total of 1 mile . what mistake does jonah make