5x+17=42. What is the second step to find the variable ?

Which of the following is the true for f(x) = 5cos

Find the value of the variable and the length of each chord for #5 and #6.

Given the numbers c = –3 and d = 4, which statement is true? a. |–c| = 3 and |–d| = –4 b. |–c| = 3 and –|d| = –4 c. –|c| = –4 and –|d| = 3 d. |–c| = 3 and –|d| = 4