Write this expression in standard form by collecting like terms:
9 (a - b) + 5 (2a - 2b)
a. 14a - 14b
b. 8a - 7b
c. 19a - 19b
d. -19a + 14b
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Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers

Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)

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