Answer:
19
Explanation:
3 caterpillars (c) are equal to 21, so we know that c is equal to 7. c + 2 clocks (b) is equal to 19; so we can subtract 7 (c) from both sides to get 2b = 12, meaning that b = 6. In the third equation, we see that a flower (f) plus b plus c is equal to 15. Plugging in our values for b and c we get f + 6 + 7 = 15 which adds to f + 13 = 15, subtract 13 from both sides to see that f = 2. Knowing all of the values, we see that c + f*b = ?. Plug in the values for b, c, and f to get 7 + 2*6. Start with multiplying 2 and 6 together to get 12 and add 7