The table below shows the proportional relationship between the weight of cereal, in ounces, and the number of packs of cereal:

Number of Packs of Cereal Number of Ounces of Cereal
3 39
4 52
5 6

What is the constant of proportionality?
13
39
42
78

The answer is a

Step-by-step explanation:

Its a because 13 times 3 is 39

13 times 4 is 52

and 13 times 5 is 65

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°

7 weeks

step-by-step explanation:

convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.