At what angle(s) is the cosine ratio exactly 1/2? Give a full explanation and draw and example of why

The class wants to raise a total of $750.if they receive a profit of $1.25 from each candybar sold, how many bars must they sell to reachtheir goal

If rs 900 amounts to rs 1044 in 4 years, what sum will amount to 1368 in 3 1/2 years at the same rate

Which number line correctly shows 0.8 + 0.3?