Jalissa bought a backpack for $30 and n notebooks for $2.50 each.

a. write a function that shows the amount jalissa spent on her backpack and n notebooks.
b. if she spent $40, how many notebooks did she buy?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?