To make peanut butter and jelly sandwiches for her class, a teacher bought bread for $2.79 per loaf, peanut butter for $3.19 per jar, and jars or jelly. The total cost was $14.56. If the teacher bout two of each item, what was the cost of one jar or jelly? Pleas explain the method you use

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

The average number of vehicles waiting in line to enter a parking lot can be modeled by the function f left parenthesis x right x squared over 2 left parenthesis 1 minus x right parenthesis endfraction , where x is a number between 0 and 1 known as the traffic intensity. find the rate of change of the number of vehicles waiting with respect to the traffic intensity for the intensities (a) xequals0.3 and (b) xequals0.6.

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?