Joyce rode her bicycle 4 miles from her house to the library, and she rode the same distance from the library to the gym. her average speed from the library to the gym was 15 miles per hour less than her average speed from her house to the library joyce modeled the trip from her house to the gym with the following expression 1+ 416 what does x - 15 represent in this situation?

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

Write an algebraic expression to match each statement a. four less than 8 times a number b. twice the difference of a number and six c. nine from a number squared

Raj encoded a secret phrase using matrix multiplication. using a = 1, b = 2, c = 3, and so on, he multiplied the clear text code for each letter by the matrix to get a matrix that represents the encoded text. the matrix representing the encoded text is . what is the secret phrase? determine the location of spaces after you decode the text. yummy is the corn the tomato is red the corn is yummy red is the tomato