Answer:
B
Step-by-step explanation:
<span>Note D = r(t)
20min = 1/3 hr and 10min = 1/6 hr
(1/3hr)30mph + (1/6hr)3mph = 10.5 mi, the total distance traveled.
total distance / total time = average speed = 10.5/(1/3 + 1/6) = 10.5/(2/6 + 1/6)
10.5mi/.5hr = 21mph
Hope This Helps
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Mrs. Annie went to a store, spent half of her money and then $10 more. She went to a second store, spent half of her remaining money and then $10 more. But she then had no money left. How much money did she have to begin with when she went to the first store?
Answer: $60
Answer: the unit rate of change is 1500. keith saves 1500 per year
Step-by-step explanation: im not a hundred percent sure about the unit rate one but thats probbably the answer
7844=7400(1+(8/12)r)
Solve for r
R=0.09*100=9%
