HELP

what is this

After two years, how much has been paid into interest?

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

Given a circle with measures of (c, d, and r) and a circle with measures of (c', d', and r'), what is d if c c' = 12 and d' = 0.50? a) 3 b) 6 c) 12 d) 24