Select the best answer for the question 13. Find the exact value by using the sum or difference identity:
cos (135° + 120°)

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?

Use corrrct notations to name the sides