Use mental math to simplify the expression. (5 + 23) + 65 -93 1 0 93 multiply. -(4x - 7) -4x - 7 28x -4x + 7 4x -7 multiply. 2(6x + 9) 30x 12x + 18 8x + 11 8x + 18 decide whether the given number is a solution to the given equation. is 9 a solution of 5(x - 3) = 35? yes or no.

Brian, chris, and damien took a math test that had 20 questions. the number of questions brian got right is 14 more than the number of questions chris got right. damien correctly answered 2 less than the number of questions chris answered correctly. if brian and damien have the same score, which statement is true?

Write the fraction or mixed number and the decimal shown by the model

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3