Directions: For his birthday, James’ family decided to open a savings account for him. He started with \$50 and committed to adding \$10 a week from his afterschool job teaching basketball to kindergartners. Use the Design Recipe to write a function `savings` that takes in the number of weeks since his birthday and calculates how much money he has saved.

 Contract and Purpose Statement

Every contract has three parts…​

_______::______->______

______________________________________________________________________________________

 Examples

Write some examples, then circle and label what changes…​

examples:

_______ (__) is ______________

_______ (__) is ______________

end

 Definition

Write the definition, giving variable names to all your input values…​

fun _______(_____):

_________________

end

Directions: Use the Design Recipe to write a function `moving` that takes in the days and number of miles driven and returns the cost of renting a truck. The truck is \$45 per day and each driven mile is 15¢.

 Contract and Purpose Statement

Every contract has three parts…​

______::______________->______

____________________________________________________________________________________________________________________________________________________________________

 Examples

Write some examples, then circle and label what changes…​

examples:

______ (______) is _______________________

______ (_______) is ________________________

end

 Definition

Write the definition, giving variable names to all your input values…​

fun ______(___________):

____________________________

end

These materials were developed partly through support of the National Science Foundation, (awards 1042210, 1535276, 1648684, and 1738598). Bootstrap by the Bootstrap Community is licensed under a Creative Commons 4.0 Unported License. This license does not grant permission to run training or professional development. Offering training or professional development with materials substantially derived from Bootstrap must be approved in writing by a Bootstrap Director. Permissions beyond the scope of this license, such as to run training, may be available by contacting contact@BootstrapWorld.org.